38728704 has 88 divisors (see below), whose sum is σ = 118038208. Its totient is φ = 11059200.

The previous prime is 38728693. The next prime is 38728769. The reversal of 38728704 is 40782783.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20604 + ... + 22404.

Almost surely, 2^38728704 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 38728704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (59019104).

38728704 is an abundant number, since it is smaller than the sum of its proper divisors (79309504).

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

38728704 is a wasteful number, since it uses less digits than its factorization.

38728704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1831 (or 1813 counting only the distinct ones).

The product of its (nonzero) digits is 75264, while the sum is 39.

The square root of 38728704 is about 6223.2390280303. The cubic root of 38728704 is about 338.3329701976.

The spelling of 38728704 in words is "thirty-eight million, seven hundred twenty-eight thousand, seven hundred four".