32139436 has 48 divisors (see below), whose sum is σ = 67551232. Its totient is φ = 13089600.

The previous prime is 32139397. The next prime is 32139473. The reversal of 32139436 is 63493123.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a junction number, because it is equal to n+sod(n) for n = 32139398 and 32139407.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52645 + ... + 53251.

Almost surely, 2^32139436 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 32139436, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33775616).

32139436 is an abundant number, since it is smaller than the sum of its proper divisors (35411796).

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

32139436 is a wasteful number, since it uses less digits than its factorization.

32139436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 710 (or 708 counting only the distinct ones).

The product of its digits is 11664, while the sum is 31.

The square root of 32139436 is about 5669.1653706697. The cubic root of 32139436 is about 317.9406690201.

The spelling of 32139436 in words is "thirty-two million, one hundred thirty-nine thousand, four hundred thirty-six".