40180900 has 18 divisors (see below), whose sum is σ = 87192770. Its totient is φ = 16072320.

The previous prime is 40180871. The next prime is 40180937. The reversal of 40180900 is 908104.

It can be written as a sum of positive squares in 3 ways, for example, as 968256 + 39212644 = 984^2 + 6262^2 .

It is a super-2 number, since 2×40180900² = 3229009449620000, 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 5 ways as a sum of consecutive naturals, for example, 200805 + ... + 201004.

Almost surely, 2^40180900 is an apocalyptic number.

It is an amenable number.

40180900 is an abundant number, since it is smaller than the sum of its proper divisors (47011870).

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

40180900 is a wasteful number, since it uses less digits than its factorization.

40180900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 401823 (or 401816 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 40180900 is about 6338.8405879940. The cubic root of 40180900 is about 342.5099718268.

The spelling of 40180900 in words is "forty million, one hundred eighty thousand, nine hundred".