428432312 has 96 divisors (see below), whose sum is σ = 1038510720. Its totient is φ = 160970880.

The previous prime is 428432281. The next prime is 428432327. The reversal of 428432312 is 213234824.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 517643 + ... + 518469.

It is an arithmetic number, because the mean of its divisors is an integer number (10817820).

Almost surely, 2^428432312 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 428432312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (519255360).

428432312 is an abundant number, since it is smaller than the sum of its proper divisors (610078408).

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

428432312 is a wasteful number, since it uses less digits than its factorization.

428432312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 909 (or 876 counting only the distinct ones).

The product of its digits is 9216, while the sum is 29.

The square root of 428432312 is about 20698.6065231455. The cubic root of 428432312 is about 753.8658538471.

The spelling of 428432312 in words is "four hundred twenty-eight million, four hundred thirty-two thousand, three hundred twelve".