38728512 has 84 divisors (see below), whose sum is σ = 112690656. Its totient is φ = 12714240.

The previous prime is 38728507. The next prime is 38728513. The reversal of 38728512 is 21582783.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38728513) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 40423 + ... + 41369.

Almost surely, 2^38728512 is an apocalyptic number.

38728512 is a gapful number since it is divisible by the number (32) 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 38728512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (56345328).

38728512 is an abundant number, since it is smaller than the sum of its proper divisors (73962144).

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

38728512 is a wasteful number, since it uses less digits than its factorization.

38728512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1036 (or 1023 counting only the distinct ones).

The product of its digits is 26880, while the sum is 36.

The square root of 38728512 is about 6223.2236019606. The cubic root of 38728512 is about 338.3324110943.

The spelling of 38728512 in words is "thirty-eight million, seven hundred twenty-eight thousand, five hundred twelve".