1022572044 has 72 divisors (see below), whose sum is σ = 2842956480. Its totient is φ = 307936512.

The previous prime is 1022572009. The next prime is 1022572063. The reversal of 1022572044 is 4402752201.

It is a junction number, because it is equal to n+sod(n) for n = 1022571999 and 1022572017.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1249 + ... + 45240.

Almost surely, 2^1022572044 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1022572044, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1421478240).

1022572044 is an abundant number, since it is smaller than the sum of its proper divisors (1820384436).

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

1022572044 is a wasteful number, since it uses less digits than its factorization.

1022572044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46559 (or 46554 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 27.

The square root of 1022572044 is about 31977.6804036816. The cubic root of 1022572044 is about 1007.4681032619.

The spelling of 1022572044 in words is "one billion, twenty-two million, five hundred seventy-two thousand, forty-four".