40158664 has 32 divisors (see below), whose sum is σ = 92675520. Its totient is φ = 15886656.

The previous prime is 40158659. The next prime is 40158691. The reversal of 40158664 is 46685104.

It is a super-2 number, since 2×40158664² = 3225436588529792, which contains 22 as substring.

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 7 ways as a sum of consecutive naturals, for example, 26854 + ... + 28309.

It is an arithmetic number, because the mean of its divisors is an integer number (2896110).

Almost surely, 2^40158664 is an apocalyptic number.

It is an amenable number.

40158664 is an abundant number, since it is smaller than the sum of its proper divisors (52516856).

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

40158664 is a wasteful number, since it uses less digits than its factorization.

40158664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55189 (or 55185 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 34.

The square root of 40158664 is about 6337.0863967599. The cubic root of 40158664 is about 342.4467788084.

The spelling of 40158664 in words is "forty million, one hundred fifty-eight thousand, six hundred sixty-four".