253424280 has 128 divisors (see below), whose sum is σ = 820108800. Its totient is φ = 62438400.

The previous prime is 253424263. The next prime is 253424291. The reversal of 253424280 is 82424352.

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 polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 92125 + ... + 94835.

It is an arithmetic number, because the mean of its divisors is an integer number (6407100).

Almost surely, 2^253424280 is an apocalyptic number.

253424280 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 253424280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (410054400).

253424280 is an abundant number, since it is smaller than the sum of its proper divisors (566684520).

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

253424280 is a wasteful number, since it uses less digits than its factorization.

253424280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2785 (or 2781 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 30.

The square root of 253424280 is about 15919.3052612229. The cubic root of 253424280 is about 632.8237069864.

The spelling of 253424280 in words is "two hundred fifty-three million, four hundred twenty-four thousand, two hundred eighty".