139616928 has 72 divisors (see below), whose sum is σ = 433139616. Its totient is φ = 42307200.

The previous prime is 139616927. The next prime is 139616929. The reversal of 139616928 is 829616931.

It is a happy number.

139616928 is a `hidden beast` number, since 1 + 3 + 9 + 616 + 9 + 28 = 666.

It is an interprime number because it is at equal distance from previous prime (139616927) and next prime (139616929).

It is a tau number, because it is divible by the number of its divisors (72).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (139616927) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18868 + ... + 25203.

It is an arithmetic number, because the mean of its divisors is an integer number (6015828).

Almost surely, 2^139616928 is an apocalyptic number.

139616928 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

139616928 is an abundant number, since it is smaller than the sum of its proper divisors (293522688).

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

139616928 is a wasteful number, since it uses less digits than its factorization.

139616928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44098 (or 44087 counting only the distinct ones).

The product of its digits is 139968, while the sum is 45.

The square root of 139616928 is about 11815.9607311467. The cubic root of 139616928 is about 518.7753825486.

The spelling of 139616928 in words is "one hundred thirty-nine million, six hundred sixteen thousand, nine hundred twenty-eight".