404557002 has 36 divisors (see below), whose sum is σ = 892379826. Its totient is φ = 132423120.

The previous prime is 404556991. The next prime is 404557009. The reversal of 404557002 is 200755404.

It can be written as a sum of positive squares in only one way, i.e., 401240961 + 3316041 = 20031^2 + 1821^2 .

It is not an unprimeable number, because it can be changed into a prime (404557009) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 666183 + ... + 666789.

Almost surely, 2^404557002 is an apocalyptic number.

404557002 is an abundant number, since it is smaller than the sum of its proper divisors (487822824).

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

404557002 is an equidigital number, since it uses as much as digits as its factorization.

404557002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1283 (or 673 counting only the distinct ones).

The product of its (nonzero) digits is 5600, while the sum is 27.

The square root of 404557002 is about 20113.6024122980. The cubic root of 404557002 is about 739.5937641258.

The spelling of 404557002 in words is "four hundred four million, five hundred fifty-seven thousand, two".