38890818 has 24 divisors (see below), whose sum is σ = 85453056. Its totient is φ = 12780600.

The previous prime is 38890807. The next prime is 38890879. The reversal of 38890818 is 81809883.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13938 + ... + 16493.

It is an arithmetic number, because the mean of its divisors is an integer number (3560544).

Almost surely, 2^38890818 is an apocalyptic number.

38890818 is an abundant number, since it is smaller than the sum of its proper divisors (46562238).

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

38890818 is a wasteful number, since it uses less digits than its factorization.

38890818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30510 (or 30507 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 45.

The square root of 38890818 is about 6236.2503156945. The cubic root of 38890818 is about 338.8043876309.

The spelling of 38890818 in words is "thirty-eight million, eight hundred ninety thousand, eight hundred eighteen".