40818904 has 64 divisors (see below), whose sum is σ = 94478400. Its totient is φ = 16134144.

The previous prime is 40818857. The next prime is 40818907. The reversal of 40818904 is 40981804.

It is a super-2 number, since 2×40818904² = 3332365847522432, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a self number, because there is not a number n which added to its sum of digits gives 40818904.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40818907) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50052 + ... + 50860.

It is an arithmetic number, because the mean of its divisors is an integer number (1476225).

Almost surely, 2^40818904 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40818904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47239200).

40818904 is an abundant number, since it is smaller than the sum of its proper divisors (53659496).

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

40818904 is a wasteful number, since it uses less digits than its factorization.

40818904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 892 (or 888 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 34.

The square root of 40818904 is about 6388.9673657016. The cubic root of 40818904 is about 344.3132849993.

The spelling of 40818904 in words is "forty million, eight hundred eighteen thousand, nine hundred four".