252402709 has 16 divisors (see below), whose sum is σ = 276998400. Its totient is φ = 228586176.

The previous prime is 252402697. The next prime is 252402719. The reversal of 252402709 is 907204252.

252402709 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 252402709 - 2¹¹ = 252400661 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252402719) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 183147 + ... + 184519.

It is an arithmetic number, because the mean of its divisors is an integer number (17312400).

Almost surely, 2^252402709 is an apocalyptic number.

It is an amenable number.

252402709 is a deficient number, since it is larger than the sum of its proper divisors (24595691).

252402709 is a wasteful number, since it uses less digits than its factorization.

252402709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1644.

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 252402709 is about 15887.1869442013. The cubic root of 252402709 is about 631.9722429793.

The spelling of 252402709 in words is "two hundred fifty-two million, four hundred two thousand, seven hundred nine".