139325568 has 64 divisors (see below), whose sum is σ = 372601920. Its totient is φ = 46126080.

The previous prime is 139325539. The next prime is 139325581. The reversal of 139325568 is 865523931.

It is a tau number, because it is divible by the number of its divisors (64).

It is a super-2 number, since 2×139325568² = 38823227797045248, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59133 + ... + 61443.

It is an arithmetic number, because the mean of its divisors is an integer number (5821905).

Almost surely, 2^139325568 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 139325568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (186300960).

139325568 is an abundant number, since it is smaller than the sum of its proper divisors (233276352).

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

139325568 is a wasteful number, since it uses less digits than its factorization.

139325568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2485 (or 2473 counting only the distinct ones).

The product of its digits is 194400, while the sum is 42.

The square root of 139325568 is about 11803.6252058425. The cubic root of 139325568 is about 518.4142619152.

The spelling of 139325568 in words is "one hundred thirty-nine million, three hundred twenty-five thousand, five hundred sixty-eight".