404752830 has 32 divisors (see below), whose sum is σ = 1028549664. Its totient is φ = 101584896.

The previous prime is 404752793. The next prime is 404752867. The reversal of 404752830 is 38257404.

It is an interprime number because it is at equal distance from previous prime (404752793) and next prime (404752867).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 404752791 and 404752800.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 396307 + ... + 397326.

It is an arithmetic number, because the mean of its divisors is an integer number (32142177).

Almost surely, 2^404752830 is an apocalyptic number.

404752830 is an abundant number, since it is smaller than the sum of its proper divisors (623796834).

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

404752830 is a wasteful number, since it uses less digits than its factorization.

404752830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 793660.

The product of its (nonzero) digits is 26880, while the sum is 33.

The square root of 404752830 is about 20118.4698722343. The cubic root of 404752830 is about 739.7130796603.

The spelling of 404752830 in words is "four hundred four million, seven hundred fifty-two thousand, eight hundred thirty".