420831576 has 48 divisors (see below), whose sum is σ = 1243368360. Its totient is φ = 127524480.

The previous prime is 420831569. The next prime is 420831581. The reversal of 420831576 is 675138024.

420831576 is a `hidden beast` number, since 4 + 2 + 0 + 83 + 1 + 576 = 666.

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

It is a self number, because there is not a number n which added to its sum of digits gives 420831576.

It is a congruent number.

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, 264885 + ... + 266468.

Almost surely, 2^420831576 is an apocalyptic number.

It is an amenable number.

420831576 is an abundant number, since it is smaller than the sum of its proper divisors (822536784).

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

420831576 is a wasteful number, since it uses less digits than its factorization.

420831576 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 531376 (or 531369 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The square root of 420831576 is about 20514.1798763684. The cubic root of 420831576 is about 749.3811641968.

The spelling of 420831576 in words is "four hundred twenty million, eight hundred thirty-one thousand, five hundred seventy-six".