404032172 has 12 divisors (see below), whose sum is σ = 709746576. Its totient is φ = 201247440.

The previous prime is 404032157. The next prime is 404032199. The reversal of 404032172 is 271230404.

It is a super-2 number, since 2×404032172² = 326483992022075168, which contains 22 as substring.

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 3 ways as a sum of consecutive naturals, for example, 190979 + ... + 193082.

It is an arithmetic number, because the mean of its divisors is an integer number (59145548).

Almost surely, 2^404032172 is an apocalyptic number.

It is an amenable number.

404032172 is a deficient number, since it is larger than the sum of its proper divisors (305714404).

404032172 is a wasteful number, since it uses less digits than its factorization.

404032172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 384328 (or 384326 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 23.

The square root of 404032172 is about 20100.5515347216. The cubic root of 404032172 is about 739.2738018233.

Adding to 404032172 its reverse (271230404), we get a palindrome (675262576).

The spelling of 404032172 in words is "four hundred four million, thirty-two thousand, one hundred seventy-two".