139732920 has 96 divisors (see below), whose sum is σ = 465257520. Its totient is φ = 36349440.

The previous prime is 139732871. The next prime is 139732939. The reversal of 139732920 is 29237931.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10027 + ... + 19493.

Almost surely, 2^139732920 is an apocalyptic number.

139732920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 139732920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (232628760).

139732920 is an abundant number, since it is smaller than the sum of its proper divisors (325524600).

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

139732920 is a wasteful number, since it uses less digits than its factorization.

139732920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9525 (or 9518 counting only the distinct ones).

The product of its (nonzero) digits is 20412, while the sum is 36.

The square root of 139732920 is about 11820.8679884347. The cubic root of 139732920 is about 518.9190068183.

The spelling of 139732920 in words is "one hundred thirty-nine million, seven hundred thirty-two thousand, nine hundred twenty".