477216820 has 24 divisors (see below), whose sum is σ = 1002877344. Its totient is φ = 190749216.

The previous prime is 477216781. The next prime is 477216833. The reversal of 477216820 is 28612774.

It is a self number, because there is not a number n which added to its sum of digits gives 477216820.

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, 22627 + ... + 38293.

It is an arithmetic number, because the mean of its divisors is an integer number (41786556).

Almost surely, 2^477216820 is an apocalyptic number.

It is an amenable number.

477216820 is an abundant number, since it is smaller than the sum of its proper divisors (525660524).

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

477216820 is a wasteful number, since it uses less digits than its factorization.

477216820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17199 (or 17197 counting only the distinct ones).

The product of its (nonzero) digits is 37632, while the sum is 37.

The square root of 477216820 is about 21845.2928568147. The cubic root of 477216820 is about 781.4572909568.

The spelling of 477216820 in words is "four hundred seventy-seven million, two hundred sixteen thousand, eight hundred twenty".