572120640 has 672 divisors, whose sum is σ = 2529596160. Its totient is φ = 115458048.

The previous prime is 572120621. The next prime is 572120641. The reversal of 572120640 is 46021275.

572120640 is a `hidden beast` number, since 5 + 7 + 2 + 12 + 0 + 640 = 666.

It is a tau number, because it is divible by the number of its divisors (672).

It is not an unprimeable number, because it can be changed into a prime (572120641) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 9696931 + ... + 9696989.

It is an arithmetic number, because the mean of its divisors is an integer number (3764280).

Almost surely, 2^572120640 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 572120640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1264798080).

572120640 is an abundant number, since it is smaller than the sum of its proper divisors (1957475520).

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

572120640 is a wasteful number, since it uses less digits than its factorization.

572120640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139 (or 126 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 572120640 is about 23919.0434591352. The cubic root of 572120640 is about 830.1614047165.

The spelling of 572120640 in words is "five hundred seventy-two million, one hundred twenty thousand, six hundred forty".