252803280 has 40 divisors (see below), whose sum is σ = 783690912. Its totient is φ = 67414144.

The previous prime is 252803197. The next prime is 252803293. The reversal of 252803280 is 82308252.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (30).

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 7 ways as a sum of consecutive naturals, for example, 526434 + ... + 526913.

Almost surely, 2^252803280 is an apocalyptic number.

252803280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

252803280 is an abundant number, since it is smaller than the sum of its proper divisors (530887632).

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

252803280 is a wasteful number, since it uses less digits than its factorization.

252803280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1053363 (or 1053357 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 30.

The square root of 252803280 is about 15899.7886778410. The cubic root of 252803280 is about 632.3063861869.

The spelling of 252803280 in words is "two hundred fifty-two million, eight hundred three thousand, two hundred eighty".