40088818 has 16 divisors (see below), whose sum is σ = 74971584. Its totient is φ = 15618960.

The previous prime is 40088813. The next prime is 40088821. The reversal of 40088818 is 81888004.

It is a super-2 number, since 2×40088818² = 3214226657274248, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40088813) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 130005 + ... + 130312.

It is an arithmetic number, because the mean of its divisors is an integer number (4685724).

Almost surely, 2^40088818 is an apocalyptic number.

40088818 is a deficient number, since it is larger than the sum of its proper divisors (34882766).

40088818 is a wasteful number, since it uses less digits than its factorization.

40088818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260337.

The product of its (nonzero) digits is 16384, while the sum is 37.

The square root of 40088818 is about 6331.5731062667. The cubic root of 40088818 is about 342.2481299530.

The spelling of 40088818 in words is "forty million, eighty-eight thousand, eight hundred eighteen".