40280904 has 48 divisors (see below), whose sum is σ = 112619520. Its totient is φ = 12993120.

The previous prime is 40280897. The next prime is 40280951. The reversal of 40280904 is 40908204.

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 11 ways as a sum of consecutive naturals, for example, 6792 + ... + 11255.

It is an arithmetic number, because the mean of its divisors is an integer number (2346240).

Almost surely, 2^40280904 is an apocalyptic number.

It is an amenable number.

40280904 is an abundant number, since it is smaller than the sum of its proper divisors (72338616).

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

40280904 is a wasteful number, since it uses less digits than its factorization.

40280904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18090 (or 18083 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 40280904 is about 6346.7238792939. The cubic root of 40280904 is about 342.7938877353.

The spelling of 40280904 in words is "forty million, two hundred eighty thousand, nine hundred four".