38644732 has 36 divisors (see below), whose sum is σ = 79806384. Its totient is φ = 16322880.

The previous prime is 38644699. The next prime is 38644747. The reversal of 38644732 is 23744683.

It is a happy number.

It is a super-2 number, since 2×38644732² = 2986830622703648, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 38644691 and 38644700.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12528 + ... + 15304.

It is an arithmetic number, because the mean of its divisors is an integer number (2216844).

Almost surely, 2^38644732 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 38644732, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39903192).

38644732 is an abundant number, since it is smaller than the sum of its proper divisors (41161652).

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

38644732 is a wasteful number, since it uses less digits than its factorization.

38644732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2866 (or 2857 counting only the distinct ones).

The product of its digits is 96768, while the sum is 37.

The square root of 38644732 is about 6216.4887195265. The cubic root of 38644732 is about 338.0882675066.

The spelling of 38644732 in words is "thirty-eight million, six hundred forty-four thousand, seven hundred thirty-two".