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7996000000 = 28561999
BaseRepresentation
bin1110111001001100…
…10100011100000000
3202122020212212221011
413130212110130000
5112333434000000
63401234010304
7402101610232
oct73446243400
922566785834
107996000000
11343359616a
121671a16994
139a5772561
1455bd46252
1531beaa2ba
hex1dc994700

7996000000 has 126 divisors (see below), whose sum is σ = 19960682000. Its totient is φ = 3196800000.

The previous prime is 7995999923. The next prime is 7996000007. The reversal of 7996000000 is 6997.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7996000007) by changing a digit.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 3999001 + ... + 4000999.

Almost surely, 27996000000 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7996000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9980341000).

7996000000 is an abundant number, since it is smaller than the sum of its proper divisors (11964682000).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7996000000 is an frugal number, since it uses more digits than its factorization.

7996000000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2045 (or 2006 counting only the distinct ones).

The product of its (nonzero) digits is 3402, while the sum is 31.

The square root of 7996000000 is about 89420.3556244326. The cubic root of 7996000000 is about 1999.6666110957. Note that the first 4 decimals are identical.

Adding to 7996000000 its reverse (6997), we get a palindrome (7996006997).

The spelling of 7996000000 in words is "seven billion, nine hundred ninety-six million", and thus it is an aban number.

Divisors: 1 2 4 5 8 10 16 20 25 32 40 50 64 80 100 125 128 160 200 250 256 320 400 500 625 640 800 1000 1250 1280 1600 1999 2000 2500 3125 3200 3998 4000 5000 6250 6400 7996 8000 9995 10000 12500 15625 15992 16000 19990 20000 25000 31250 31984 32000 39980 40000 49975 50000 62500 63968 79960 80000 99950 100000 125000 127936 159920 160000 199900 200000 249875 250000 255872 319840 399800 400000 499750 500000 511744 639680 799600 800000 999500 1000000 1249375 1279360 1599200 1999000 2000000 2498750 2558720 3198400 3998000 4000000 4997500 6246875 6396800 7996000 9995000 12493750 12793600 15992000 19990000 24987500 31234375 31984000 39980000 49975000 62468750 63968000 79960000 99950000 124937500 159920000 199900000 249875000 319840000 399800000 499750000 799600000 999500000 1599200000 1999000000 3998000000 7996000000