404431230 has 32 divisors (see below), whose sum is σ = 1109297664. Its totient is φ = 92441376.

The previous prime is 404431189. The next prime is 404431243. The reversal of 404431230 is 32134404.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 404431197 and 404431206.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 962722 + ... + 963141.

It is an arithmetic number, because the mean of its divisors is an integer number (34665552).

Almost surely, 2^404431230 is an apocalyptic number.

404431230 is an abundant number, since it is smaller than the sum of its proper divisors (704866434).

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

404431230 is a wasteful number, since it uses less digits than its factorization.

404431230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1925880.

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 404431230 is about 20110.4756283883. The cubic root of 404431230 is about 739.5171125227.

Adding to 404431230 its reverse (32134404), we get a palindrome (436565634).

The spelling of 404431230 in words is "four hundred four million, four hundred thirty-one thousand, two hundred thirty".