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1368930836 = 227313234771
BaseRepresentation
bin101000110011000…
…0011101000010100
310112101212220002002
41101212003220110
510300421241321
6343500534432
745631502000
oct12146035024
93471786062
101368930836
116427a8aa9
12322551418
1318a7c0c60
14cdb45700
15802a920b
hex51983a14

1368930836 has 192 divisors, whose sum is σ = 3251404800. Its totient is φ = 499847040.

The previous prime is 1368930809. The next prime is 1368930839. The reversal of 1368930836 is 6380398631.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1368930839) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 19280681 + ... + 19280751.

It is an arithmetic number, because the mean of its divisors is an integer number (16934400).

Almost surely, 21368930836 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 1368930836, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1625702400).

1368930836 is an abundant number, since it is smaller than the sum of its proper divisors (1882473964).

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

1368930836 is a wasteful number, since it uses less digits than its factorization.

1368930836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179 (or 163 counting only the distinct ones).

The product of its (nonzero) digits is 559872, while the sum is 47.

The square root of 1368930836 is about 36999.0653395461. The cubic root of 1368930836 is about 1110.3515473356.

The spelling of 1368930836 in words is "one billion, three hundred sixty-eight million, nine hundred thirty thousand, eight hundred thirty-six".