404412500 has 36 divisors (see below), whose sum is σ = 884623068. Its totient is φ = 161760000.

The previous prime is 404412499. The next prime is 404412523. The reversal of 404412500 is 5214404.

It can be written as a sum of positive squares in 6 ways, for example, as 258437776 + 145974724 = 16076^2 + 12082^2 .

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 11 ways as a sum of consecutive naturals, for example, 3677 + ... + 28676.

It is an arithmetic number, because the mean of its divisors is an integer number (24572863).

Almost surely, 2^404412500 is an apocalyptic number.

It is an amenable number.

404412500 is an abundant number, since it is smaller than the sum of its proper divisors (480210568).

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

404412500 is an equidigital number, since it uses as much as digits as its factorization.

404412500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32382 (or 32360 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 404412500 is about 20110.0099452984. The cubic root of 404412500 is about 739.5056961859.

Adding to 404412500 its reverse (5214404), we get a palindrome (409626904).

The spelling of 404412500 in words is "four hundred four million, four hundred twelve thousand, five hundred".