38471720 has 32 divisors (see below), whose sum is σ = 98928000. Its totient is φ = 13190208.

The previous prime is 38471707. The next prime is 38471723. The reversal of 38471720 is 2717483.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (38471723) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68420 + ... + 68979.

It is an arithmetic number, because the mean of its divisors is an integer number (3091500).

Almost surely, 2^38471720 is an apocalyptic number.

It is an amenable number.

38471720 is an abundant number, since it is smaller than the sum of its proper divisors (60456280).

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

38471720 is a wasteful number, since it uses less digits than its factorization.

38471720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137417 (or 137413 counting only the distinct ones).

The product of its (nonzero) digits is 9408, while the sum is 32.

The square root of 38471720 is about 6202.5575370165. The cubic root of 38471720 is about 337.5829736552.

The spelling of 38471720 in words is "thirty-eight million, four hundred seventy-one thousand, seven hundred twenty".