40158764 has 24 divisors (see below), whose sum is σ = 74514048. Its totient is φ = 18904320.

The previous prime is 40158751. The next prime is 40158779. The reversal of 40158764 is 46785104.

40158764 = 2237² + 2238² + ... + 2244².

It is a super-2 number, since 2×40158764² = 3225452652015392, 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, 212 + ... + 8964.

It is an arithmetic number, because the mean of its divisors is an integer number (3104752).

Almost surely, 2^40158764 is an apocalyptic number.

It is an amenable number.

40158764 is a deficient number, since it is larger than the sum of its proper divisors (34355284).

40158764 is a wasteful number, since it uses less digits than its factorization.

40158764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8825 (or 8823 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 35.

The square root of 40158764 is about 6337.0942868163. The cubic root of 40158764 is about 342.4470630529.

The spelling of 40158764 in words is "forty million, one hundred fifty-eight thousand, seven hundred sixty-four".