40161136 has 20 divisors (see below), whose sum is σ = 81908200. Its totient is φ = 19023552.

The previous prime is 40161113. The next prime is 40161167. The reversal of 40161136 is 63116104.

It is a happy number.

40161136 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×40161136² = 3225833689620992, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65751 + ... + 66358.

It is an arithmetic number, because the mean of its divisors is an integer number (4095410).

Almost surely, 2^40161136 is an apocalyptic number.

It is an amenable number.

40161136 is an abundant number, since it is smaller than the sum of its proper divisors (41747064).

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

40161136 is a wasteful number, since it uses less digits than its factorization.

40161136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132136 (or 132130 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 40161136 is about 6337.2814360734. The cubic root of 40161136 is about 342.4538051964.

The spelling of 40161136 in words is "forty million, one hundred sixty-one thousand, one hundred thirty-six".