431720790 has 64 divisors (see below), whose sum is σ = 1058235840. Its totient is φ = 112688640.

The previous prime is 431720789. The next prime is 431720819. The reversal of 431720790 is 97027134.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 491832 + ... + 492708.

It is an arithmetic number, because the mean of its divisors is an integer number (16534935).

Almost surely, 2^431720790 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 431720790, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (529117920).

431720790 is an abundant number, since it is smaller than the sum of its proper divisors (626515050).

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

431720790 is a wasteful number, since it uses less digits than its factorization.

431720790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1217.

The product of its (nonzero) digits is 10584, while the sum is 33.

The square root of 431720790 is about 20777.8918564902. The cubic root of 431720790 is about 755.7897325427.

The spelling of 431720790 in words is "four hundred thirty-one million, seven hundred twenty thousand, seven hundred ninety".