253504380 has 24 divisors (see below), whose sum is σ = 709812432. Its totient is φ = 67601152.

The previous prime is 253504379. The next prime is 253504409. The reversal of 253504380 is 83405352.

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 7 ways as a sum of consecutive naturals, for example, 2112477 + ... + 2112596.

It is an arithmetic number, because the mean of its divisors is an integer number (29575518).

Almost surely, 2^253504380 is an apocalyptic number.

253504380 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

253504380 is an abundant number, since it is smaller than the sum of its proper divisors (456308052).

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

253504380 is a wasteful number, since it uses less digits than its factorization.

253504380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4225085 (or 4225083 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 30.

The square root of 253504380 is about 15921.8208757667. The cubic root of 253504380 is about 632.8903723159.

The spelling of 253504380 in words is "two hundred fifty-three million, five hundred four thousand, three hundred eighty".