423124728 has 32 divisors (see below), whose sum is σ = 1139182800. Its totient is φ = 130192128.

The previous prime is 423124693. The next prime is 423124753. The reversal of 423124728 is 827421324.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 677773 + ... + 678396.

Almost surely, 2^423124728 is an apocalyptic number.

It is an amenable number.

423124728 is an abundant number, since it is smaller than the sum of its proper divisors (716058072).

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

423124728 is a wasteful number, since it uses less digits than its factorization.

423124728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1356191 (or 1356187 counting only the distinct ones).

The product of its digits is 21504, while the sum is 33.

The square root of 423124728 is about 20569.9958191537. The cubic root of 423124728 is about 750.7398494792.

The spelling of 423124728 in words is "four hundred twenty-three million, one hundred twenty-four thousand, seven hundred twenty-eight".