38912520 has 64 divisors (see below), whose sum is σ = 117976320. Its totient is φ = 10266624.

The previous prime is 38912509. The next prime is 38912543. The reversal of 38912520 is 2521983.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9969 + ... + 13311.

It is an arithmetic number, because the mean of its divisors is an integer number (1843380).

Almost surely, 2^38912520 is an apocalyptic number.

38912520 is a gapful number since it is divisible by the number (30) 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 38912520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58988160).

38912520 is an abundant number, since it is smaller than the sum of its proper divisors (79063800).

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

38912520 is a wasteful number, since it uses less digits than its factorization.

38912520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3454 (or 3450 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 38912520 is about 6237.9900609090. The cubic root of 38912520 is about 338.8673962103.

The spelling of 38912520 in words is "thirty-eight million, nine hundred twelve thousand, five hundred twenty".