38817420 has 24 divisors (see below), whose sum is σ = 108688944. Its totient is φ = 10351296.

The previous prime is 38817413. The next prime is 38817461. The reversal of 38817420 is 2471883.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 323419 + ... + 323538.

It is an arithmetic number, because the mean of its divisors is an integer number (4528706).

Almost surely, 2^38817420 is an apocalyptic number.

38817420 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

38817420 is an abundant number, since it is smaller than the sum of its proper divisors (69871524).

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

38817420 is a wasteful number, since it uses less digits than its factorization.

38817420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 646969 (or 646967 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 33.

The square root of 38817420 is about 6230.3627502739. The cubic root of 38817420 is about 338.5911134255.

The spelling of 38817420 in words is "thirty-eight million, eight hundred seventeen thousand, four hundred twenty".