652724538 has 8 divisors (see below), whose sum is σ = 1305449088. Its totient is φ = 217574844.

The previous prime is 652724509. The next prime is 652724539. The reversal of 652724538 is 835427256.

It is a sphenic number, since it is the product of 3 distinct primes.

652724538 is an admirable number.

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 652724538.

It is not an unprimeable number, because it can be changed into a prime (652724539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54393706 + ... + 54393717.

It is an arithmetic number, because the mean of its divisors is an integer number (163181136).

Almost surely, 2^652724538 is an apocalyptic number.

652724538 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

652724538 is a wasteful number, since it uses less digits than its factorization.

652724538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108787428.

The product of its digits is 403200, while the sum is 42.

The square root of 652724538 is about 25548.4742792989. The cubic root of 652724538 is about 867.4477266157.

The spelling of 652724538 in words is "six hundred fifty-two million, seven hundred twenty-four thousand, five hundred thirty-eight".