139234568 has 32 divisors (see below), whose sum is σ = 294624000. Its totient is φ = 61104960.

The previous prime is 139234561. The next prime is 139234591. The reversal of 139234568 is 865432931.

It is a super-2 number, since 2×139234568² = 38772529852293248, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (139234561) 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, 24728 + ... + 29831.

It is an arithmetic number, because the mean of its divisors is an integer number (9207000).

Almost surely, 2^139234568 is an apocalyptic number.

It is an amenable number.

139234568 is an abundant number, since it is smaller than the sum of its proper divisors (155389432).

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

139234568 is a wasteful number, since it uses less digits than its factorization.

139234568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54605 (or 54601 counting only the distinct ones).

The product of its digits is 155520, while the sum is 41.

The square root of 139234568 is about 11799.7698282636. The cubic root of 139234568 is about 518.3013705220.

The spelling of 139234568 in words is "one hundred thirty-nine million, two hundred thirty-four thousand, five hundred sixty-eight".