40156904 has 16 divisors (see below), whose sum is σ = 77723520. Its totient is φ = 19430640.

The previous prime is 40156903. The next prime is 40156913. The reversal of 40156904 is 40965104.

It is a super-2 number, since 2×40156904² = 3225153877730432, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40156903) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 80714 + ... + 81209.

It is an arithmetic number, because the mean of its divisors is an integer number (4857720).

Almost surely, 2^40156904 is an apocalyptic number.

It is an amenable number.

40156904 is a deficient number, since it is larger than the sum of its proper divisors (37566616).

40156904 is a wasteful number, since it uses less digits than its factorization.

40156904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161960 (or 161956 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 40156904 is about 6336.9475301599. The cubic root of 40156904 is about 342.4417760263.

The spelling of 40156904 in words is "forty million, one hundred fifty-six thousand, nine hundred four".