40173156 has 36 divisors (see below), whose sum is σ = 103713792. Its totient is φ = 13105584.

The previous prime is 40173151. The next prime is 40173167. The reversal of 40173156 is 65137104.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×40173156² = 3227764926000672, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40173151) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10180 + ... + 13563.

Almost surely, 2^40173156 is an apocalyptic number.

It is an amenable number.

40173156 is an abundant number, since it is smaller than the sum of its proper divisors (63540636).

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

40173156 is a wasteful number, since it uses less digits than its factorization.

40173156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23800 (or 23795 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The square root of 40173156 is about 6338.2297213023. The cubic root of 40173156 is about 342.4879666151.

The spelling of 40173156 in words is "forty million, one hundred seventy-three thousand, one hundred fifty-six".