253053240 has 64 divisors (see below), whose sum is σ = 828178560. Its totient is φ = 61345920.

The previous prime is 253053221. The next prime is 253053247. The reversal of 253053240 is 42350352.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 253053240.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253053247) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 94534 + ... + 97173.

It is an arithmetic number, because the mean of its divisors is an integer number (12940290).

Almost surely, 2^253053240 is an apocalyptic number.

253053240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

253053240 is an abundant number, since it is smaller than the sum of its proper divisors (575125320).

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

253053240 is a wasteful number, since it uses less digits than its factorization.

253053240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191732 (or 191728 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 24.

The square root of 253053240 is about 15907.6472176120. The cubic root of 253053240 is about 632.5147158173.

The spelling of 253053240 in words is "two hundred fifty-three million, fifty-three thousand, two hundred forty".