352720644 has 48 divisors (see below), whose sum is σ = 843575040. Its totient is φ = 114668320.

The previous prime is 352720561. The next prime is 352720651. The reversal of 352720644 is 446027253.

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, 90847 + ... + 94649.

It is an arithmetic number, because the mean of its divisors is an integer number (17574480).

Almost surely, 2^352720644 is an apocalyptic number.

It is an amenable number.

352720644 is an abundant number, since it is smaller than the sum of its proper divisors (490854396).

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

352720644 is a wasteful number, since it uses less digits than its factorization.

352720644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4000 (or 3998 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 33.

The square root of 352720644 is about 18780.8584468336. The cubic root of 352720644 is about 706.5511803485.

Adding to 352720644 its reverse (446027253), we get a palindrome (798747897).

The spelling of 352720644 in words is "three hundred fifty-two million, seven hundred twenty thousand, six hundred forty-four".