572022890 has 32 divisors (see below), whose sum is σ = 1048150800. Its totient is φ = 224722944.

The previous prime is 572022887. The next prime is 572022959. The reversal of 572022890 is 98220275.

It is a Cunningham number, because it is equal to 23917²+1.

It can be written as a sum of positive squares in 8 ways, for example, as 324684361 + 247338529 = 18019^2 + 15727^2 .

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 572022890.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 186086 + ... + 189134.

Almost surely, 2^572022890 is an apocalyptic number.

572022890 is a deficient number, since it is larger than the sum of its proper divisors (476127910).

572022890 is a wasteful number, since it uses less digits than its factorization.

572022890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3386.

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 572022890 is about 23917.0000209056. Note that the first 4 decimals coincide. The cubic root of 572022890 is about 830.1141227893.

The spelling of 572022890 in words is "five hundred seventy-two million, twenty-two thousand, eight hundred ninety".