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80970080 = 2554112343
BaseRepresentation
bin1001101001110…
…00000101100000
312122100201001212
410310320011200
5131212020310
612011245252
72002143242
oct464700540
9178321055
1080970080
1141784024
1223149828
1313a0cab9
14aa7a092
157196205
hex4d38160

80970080 has 48 divisors (see below), whose sum is σ = 195973344. Its totient is φ = 31595520.

The previous prime is 80970053. The next prime is 80970083. The reversal of 80970080 is 8007908.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80970083) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 389 + ... + 12731.

It is an arithmetic number, because the mean of its divisors is an integer number (4082778).

Almost surely, 280970080 is an apocalyptic number.

80970080 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 80970080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97986672).

80970080 is an abundant number, since it is smaller than the sum of its proper divisors (115003264).

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

80970080 is a wasteful number, since it uses less digits than its factorization.

80970080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12399 (or 12391 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 32.

The square root of 80970080 is about 8998.3376242504. The cubic root of 80970080 is about 432.6215903250.

Adding to 80970080 its reverse (8007908), we get a palindrome (88977988).

The spelling of 80970080 in words is "eighty million, nine hundred seventy thousand, eighty".

Divisors: 1 2 4 5 8 10 16 20 32 40 41 80 82 160 164 205 328 410 656 820 1312 1640 3280 6560 12343 24686 49372 61715 98744 123430 197488 246860 394976 493720 506063 987440 1012126 1974880 2024252 2530315 4048504 5060630 8097008 10121260 16194016 20242520 40485040 80970080