38312920 has 16 divisors (see below), whose sum is σ = 86204160. Its totient is φ = 15325152.

The previous prime is 38312899. The next prime is 38312927. The reversal of 38312920 is 2921383.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38312927) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 478872 + ... + 478951.

It is an arithmetic number, because the mean of its divisors is an integer number (5387760).

Almost surely, 2^38312920 is an apocalyptic number.

It is an amenable number.

38312920 is an abundant number, since it is smaller than the sum of its proper divisors (47891240).

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

38312920 is a wasteful number, since it uses less digits than its factorization.

38312920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 957834 (or 957830 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 38312920 is about 6189.7431287574. The cubic root of 38312920 is about 337.1178518684.

The spelling of 38312920 in words is "thirty-eight million, three hundred twelve thousand, nine hundred twenty".