32139730 has 32 divisors (see below), whose sum is σ = 67371264. Its totient is φ = 10810176.

The previous prime is 32139727. The next prime is 32139733. The reversal of 32139730 is 3793123.

It is an interprime number because it is at equal distance from previous prime (32139727) and next prime (32139733).

It is not an unprimeable number, because it can be changed into a prime (32139733) 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, 622 + ... + 8041.

It is an arithmetic number, because the mean of its divisors is an integer number (2105352).

Almost surely, 2^32139730 is an apocalyptic number.

32139730 is an abundant number, since it is smaller than the sum of its proper divisors (35231534).

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

32139730 is a wasteful number, since it uses less digits than its factorization.

32139730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8730.

The product of its (nonzero) digits is 3402, while the sum is 28.

The square root of 32139730 is about 5669.1913003532. The cubic root of 32139730 is about 317.9416384861.

The spelling of 32139730 in words is "thirty-two million, one hundred thirty-nine thousand, seven hundred thirty".