139797528 has 64 divisors (see below), whose sum is σ = 398532960. Its totient is φ = 40482816.

The previous prime is 139797527. The next prime is 139797547. The reversal of 139797528 is 825797931.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139797527) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7875 + ... + 18482.

Almost surely, 2^139797528 is an apocalyptic number.

It is an amenable number.

139797528 is an abundant number, since it is smaller than the sum of its proper divisors (258735432).

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

139797528 is a wasteful number, since it uses less digits than its factorization.

139797528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26396 (or 26392 counting only the distinct ones).

The product of its digits is 952560, while the sum is 51.

The square root of 139797528 is about 11823.6004668629. The cubic root of 139797528 is about 518.9989716383.

The spelling of 139797528 in words is "one hundred thirty-nine million, seven hundred ninety-seven thousand, five hundred twenty-eight".