38940720 has 160 divisors (see below), whose sum is σ = 148657152. Its totient is φ = 8211456.

The previous prime is 38940701. The next prime is 38940739. The reversal of 38940720 is 2704983.

It is an interprime number because it is at equal distance from previous prime (38940701) and next prime (38940739).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20949 + ... + 22731.

Almost surely, 2^38940720 is an apocalyptic number.

38940720 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 38940720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74328576).

38940720 is an abundant number, since it is smaller than the sum of its proper divisors (109716432).

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

38940720 is a wasteful number, since it uses less digits than its factorization.

38940720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1819 (or 1813 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 33.

The square root of 38940720 is about 6240.2499949922. The cubic root of 38940720 is about 338.9492357919.

The spelling of 38940720 in words is "thirty-eight million, nine hundred forty thousand, seven hundred twenty".