40207904 has 48 divisors (see below), whose sum is σ = 87272640. Its totient is φ = 18082560.

The previous prime is 40207903. The next prime is 40207927. The reversal of 40207904 is 40970204.

It is not an unprimeable number, because it can be changed into a prime (40207901) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35702 + ... + 36810.

It is an arithmetic number, because the mean of its divisors is an integer number (1818180).

Almost surely, 2^40207904 is an apocalyptic number.

40207904 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40207904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43636320).

40207904 is an abundant number, since it is smaller than the sum of its proper divisors (47064736).

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

40207904 is a wasteful number, since it uses less digits than its factorization.

40207904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1233 (or 1225 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 40207904 is about 6340.9702727579. The cubic root of 40207904 is about 342.5866837974.

The spelling of 40207904 in words is "forty million, two hundred seven thousand, nine hundred four".