652394890 has 64 divisors (see below), whose sum is σ = 1426802688. Its totient is φ = 209664000.

The previous prime is 652394881. The next prime is 652394903. The reversal of 652394890 is 98493256.

It is a super-2 number, since 2×652394890² = 851238184996224200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 652394890.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 333415 + ... + 335365.

It is an arithmetic number, because the mean of its divisors is an integer number (22293792).

Almost surely, 2^652394890 is an apocalyptic number.

652394890 is an abundant number, since it is smaller than the sum of its proper divisors (774407798).

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

652394890 is a wasteful number, since it uses less digits than its factorization.

652394890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2263.

The product of its (nonzero) digits is 466560, while the sum is 46.

The square root of 652394890 is about 25542.0220421172. The cubic root of 652394890 is about 867.3016718644.

The spelling of 652394890 in words is "six hundred fifty-two million, three hundred ninety-four thousand, eight hundred ninety".