572651640 has 512 divisors, whose sum is σ = 2280960000. Its totient is φ = 126282240.

The previous prime is 572651587. The next prime is 572651641. The reversal of 572651640 is 46156275.

It is a happy number.

572651640 is a `hidden beast` number, since 5 + 7 + 2 + 6 + 5 + 1 + 640 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 572651595 and 572651604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (572651641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 9705931 + ... + 9705989.

It is an arithmetic number, because the mean of its divisors is an integer number (4455000).

Almost surely, 2^572651640 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 572651640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1140480000).

572651640 is an abundant number, since it is smaller than the sum of its proper divisors (1708308360).

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

572651640 is a wasteful number, since it uses less digits than its factorization.

572651640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152 (or 142 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 36.

The square root of 572651640 is about 23930.1408269989. The cubic root of 572651640 is about 830.4181567416.

The spelling of 572651640 in words is "five hundred seventy-two million, six hundred fifty-one thousand, six hundred forty".