38890518 has 8 divisors (see below), whose sum is σ = 77781048. Its totient is φ = 12963504.

The previous prime is 38890513. The next prime is 38890529. The reversal of 38890518 is 81509883.

It is a sphenic number, since it is the product of 3 distinct primes.

38890518 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 38890518.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38890513) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 3240871 + ... + 3240882.

It is an arithmetic number, because the mean of its divisors is an integer number (9722631).

Almost surely, 2^38890518 is an apocalyptic number.

38890518 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

38890518 is a wasteful number, since it uses less digits than its factorization.

38890518 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6481758.

The product of its (nonzero) digits is 69120, while the sum is 42.

The square root of 38890518 is about 6236.2262627329. The cubic root of 38890518 is about 338.8035164606.

The spelling of 38890518 in words is "thirty-eight million, eight hundred ninety thousand, five hundred eighteen".