38917020 has 24 divisors (see below), whose sum is σ = 108967824. Its totient is φ = 10377856.

The previous prime is 38917001. The next prime is 38917027. The reversal of 38917020 is 2071983.

It is a happy number.

38917020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38917027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 324249 + ... + 324368.

It is an arithmetic number, because the mean of its divisors is an integer number (4540326).

Almost surely, 2^38917020 is an apocalyptic number.

38917020 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

38917020 is an abundant number, since it is smaller than the sum of its proper divisors (70050804).

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

38917020 is a wasteful number, since it uses less digits than its factorization.

38917020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 648629 (or 648627 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 30.

The square root of 38917020 is about 6238.3507435860. The cubic root of 38917020 is about 338.8804583687.

The spelling of 38917020 in words is "thirty-eight million, nine hundred seventeen thousand, twenty".