2001572022 has 16 divisors (see below), whose sum is σ = 4004118720. Its totient is φ = 667028232.

The previous prime is 2001571969. The next prime is 2001572039. The reversal of 2001572022 is 2202751002.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 2001572022.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12408 + ... + 64475.

It is an arithmetic number, because the mean of its divisors is an integer number (250257420).

Almost surely, 2^2001572022 is an apocalyptic number.

2001572022 is an abundant number, since it is smaller than the sum of its proper divisors (2002546698).

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

2001572022 is a wasteful number, since it uses less digits than its factorization.

2001572022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81227.

The product of its (nonzero) digits is 560, while the sum is 21.

The square root of 2001572022 is about 44738.9318379418. The cubic root of 2001572022 is about 1260.2510673790.

The spelling of 2001572022 in words is "two billion, one million, five hundred seventy-two thousand, twenty-two".