40038888 has 32 divisors (see below), whose sum is σ = 101511360. Its totient is φ = 13157760.

The previous prime is 40038839. The next prime is 40038907. The reversal of 40038888 is 88883004.

40038888 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×40038888² = 3206225104553088, which contains 22 as substring.

It is an unprimeable number.

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, 10045 + ... + 13452.

It is an arithmetic number, because the mean of its divisors is an integer number (3172230).

Almost surely, 2^40038888 is an apocalyptic number.

It is an amenable number.

40038888 is an abundant number, since it is smaller than the sum of its proper divisors (61472472).

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

40038888 is a wasteful number, since it uses less digits than its factorization.

40038888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23577 (or 23573 counting only the distinct ones).

The product of its (nonzero) digits is 49152, while the sum is 39.

The square root of 40038888 is about 6327.6289398162. The cubic root of 40038888 is about 342.1059826797.

The spelling of 40038888 in words is "forty million, thirty-eight thousand, eight hundred eighty-eight".