820268472 has 32 divisors (see below), whose sum is σ = 2071818000. Its totient is φ = 270603264.

The previous prime is 820268453. The next prime is 820268483. The reversal of 820268472 is 274862028.

It is a self number, because there is not a number n which added to its sum of digits gives 820268472.

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, 173847 + ... + 178502.

Almost surely, 2^820268472 is an apocalyptic number.

It is an amenable number.

820268472 is an abundant number, since it is smaller than the sum of its proper divisors (1251549528).

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

820268472 is a wasteful number, since it uses less digits than its factorization.

820268472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 352455 (or 352451 counting only the distinct ones).

The product of its (nonzero) digits is 86016, while the sum is 39.

The square root of 820268472 is about 28640.3294673787. The cubic root of 820268472 is about 936.0923004164.

The spelling of 820268472 in words is "eight hundred twenty million, two hundred sixty-eight thousand, four hundred seventy-two".