428443524 has 36 divisors (see below), whose sum is σ = 1086059520. Its totient is φ = 142412400.

The previous prime is 428443511. The next prime is 428443549. The reversal of 428443524 is 425344824.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3652 + ... + 29499.

It is an arithmetic number, because the mean of its divisors is an integer number (30168320).

Almost surely, 2^428443524 is an apocalyptic number.

It is an amenable number.

428443524 is an abundant number, since it is smaller than the sum of its proper divisors (657615996).

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

428443524 is a wasteful number, since it uses less digits than its factorization.

428443524 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33520 (or 33515 counting only the distinct ones).

The product of its digits is 122880, while the sum is 36.

The square root of 428443524 is about 20698.8773608619. The cubic root of 428443524 is about 753.8724299697.

The spelling of 428443524 in words is "four hundred twenty-eight million, four hundred forty-three thousand, five hundred twenty-four".