428438332 has 12 divisors (see below), whose sum is σ = 856876720. Its totient is φ = 183616416.

The previous prime is 428438327. The next prime is 428438341. The reversal of 428438332 is 233834824.

428438332 is an admirable number.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 428438291 and 428438300.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7650657 + ... + 7650712.

Almost surely, 2^428438332 is an apocalyptic number.

It is an amenable number.

428438332 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

428438332 is a wasteful number, since it uses less digits than its factorization.

428438332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15301380 (or 15301378 counting only the distinct ones).

The product of its digits is 110592, while the sum is 37.

The square root of 428438332 is about 20698.7519430520. The cubic root of 428438332 is about 753.8693847442.

The spelling of 428438332 in words is "four hundred twenty-eight million, four hundred thirty-eight thousand, three hundred thirty-two".