4000820572 has 12 divisors (see below), whose sum is σ = 8001641200. Its totient is φ = 1714637376.

The previous prime is 4000820569. The next prime is 4000820611. The reversal of 4000820572 is 2750280004.

4000820572 is an admirable number.

It is a Harshad number since it is a multiple of its sum of digits (28), and also a Moran number because the ratio is a prime number: 142886449 = 4000820572 / (4 + 0 + 0 + 0 + 8 + 2 + 0 + 5 + 7 + 2).

It is a self number, because there is not a number n which added to its sum of digits gives 4000820572.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71443197 + ... + 71443252.

Almost surely, 2^4000820572 is an apocalyptic number.

It is an amenable number.

4000820572 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

4000820572 is a wasteful number, since it uses less digits than its factorization.

4000820572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142886460 (or 142886458 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 28.

The square root of 4000820572 is about 63252.0400619616. The cubic root of 4000820572 is about 1587.5095926178.

The spelling of 4000820572 in words is "four billion, eight hundred twenty thousand, five hundred seventy-two".