253018140 has 48 divisors (see below), whose sum is σ = 750127392. Its totient is φ = 63502336.

The previous prime is 253018133. The next prime is 253018153. The reversal of 253018140 is 41810352.

It is a self number, because there is not a number n which added to its sum of digits gives 253018140.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 123009 + ... + 125048.

It is an arithmetic number, because the mean of its divisors is an integer number (15627654).

Almost surely, 2^253018140 is an apocalyptic number.

253018140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

253018140 is an abundant number, since it is smaller than the sum of its proper divisors (497109252).

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

253018140 is a wasteful number, since it uses less digits than its factorization.

253018140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248086 (or 248084 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 253018140 is about 15906.5439363804. The cubic root of 253018140 is about 632.4854699386.

Adding to 253018140 its reverse (41810352), we get a palindrome (294828492).

The spelling of 253018140 in words is "two hundred fifty-three million, eighteen thousand, one hundred forty".