40404800 has 42 divisors (see below), whose sum is σ = 99424998. Its totient is φ = 16161280.

The previous prime is 40404799. The next prime is 40404817. The reversal of 40404800 is 840404.

It can be written as a sum of positive squares in 3 ways, for example, as 10549504 + 29855296 = 3248^2 + 5464^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11027 + ... + 14226.

Almost surely, 2^40404800 is an apocalyptic number.

40404800 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40404800 is an abundant number, since it is smaller than the sum of its proper divisors (59020198).

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

40404800 is a wasteful number, since it uses less digits than its factorization.

40404800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25275 (or 25260 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

The square root of 40404800 is about 6356.4770116787. The cubic root of 40404800 is about 343.1449831483.

The spelling of 40404800 in words is "forty million, four hundred four thousand, eight hundred".