252749720 has 16 divisors (see below), whose sum is σ = 568686960. Its totient is φ = 101099872.

The previous prime is 252749719. The next prime is 252749753. The reversal of 252749720 is 27947252.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 3159332 + ... + 3159411.

It is an arithmetic number, because the mean of its divisors is an integer number (35542935).

Almost surely, 2^252749720 is an apocalyptic number.

252749720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

252749720 is an abundant number, since it is smaller than the sum of its proper divisors (315937240).

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

252749720 is a wasteful number, since it uses less digits than its factorization.

252749720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6318754 (or 6318750 counting only the distinct ones).

The product of its (nonzero) digits is 70560, while the sum is 38.

The square root of 252749720 is about 15898.1042895057. The cubic root of 252749720 is about 632.2617286413.

The spelling of 252749720 in words is "two hundred fifty-two million, seven hundred forty-nine thousand, seven hundred twenty".