252297840 has 80 divisors (see below), whose sum is σ = 807376896. Its totient is φ = 65107200.

The previous prime is 252297811. The next prime is 252297841. The reversal of 252297840 is 48792252.

252297840 is digitally balanced in base 3, 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 (80).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252297841) 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, 9516 + ... + 24395.

Almost surely, 2^252297840 is an apocalyptic number.

252297840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

252297840 is an abundant number, since it is smaller than the sum of its proper divisors (555079056).

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

252297840 is a wasteful number, since it uses less digits than its factorization.

252297840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33958 (or 33952 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 39.

The square root of 252297840 is about 15883.8861743592. The cubic root of 252297840 is about 631.8847063093.

The spelling of 252297840 in words is "two hundred fifty-two million, two hundred ninety-seven thousand, eight hundred forty".