252699520 has 64 divisors (see below), whose sum is σ = 609062400. Its totient is φ = 100251648.

The previous prime is 252699497. The next prime is 252699539. The reversal of 252699520 is 25996252.

252699520 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a zygodrome in base 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79726 + ... + 82834.

It is an arithmetic number, because the mean of its divisors is an integer number (9516600).

Almost surely, 2^252699520 is an apocalyptic number.

252699520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 252699520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (304531200).

252699520 is an abundant number, since it is smaller than the sum of its proper divisors (356362880).

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

252699520 is a wasteful number, since it uses less digits than its factorization.

252699520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3255 (or 3243 counting only the distinct ones).

The product of its (nonzero) digits is 97200, while the sum is 40.

The square root of 252699520 is about 15896.5254065157. The cubic root of 252699520 is about 632.2198668866.

The spelling of 252699520 in words is "two hundred fifty-two million, six hundred ninety-nine thousand, five hundred twenty".