252452440 has 16 divisors (see below), whose sum is σ = 568018080. Its totient is φ = 100980960.

The previous prime is 252452419. The next prime is 252452467. The reversal of 252452440 is 44254252.

It is a junction number, because it is equal to n+sod(n) for n = 252452399 and 252452408.

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, 3155616 + ... + 3155695.

It is an arithmetic number, because the mean of its divisors is an integer number (35501130).

Almost surely, 2^252452440 is an apocalyptic number.

252452440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

252452440 is an abundant number, since it is smaller than the sum of its proper divisors (315565640).

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

252452440 is a wasteful number, since it uses less digits than its factorization.

252452440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6311322 (or 6311318 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 28.

The square root of 252452440 is about 15888.7519963023. The cubic root of 252452440 is about 632.0137461626.

The spelling of 252452440 in words is "two hundred fifty-two million, four hundred fifty-two thousand, four hundred forty".