253450140 has 48 divisors (see below), whose sum is σ = 734136480. Its totient is φ = 65255680.

The previous prime is 253450129. The next prime is 253450147. The reversal of 253450140 is 41054352.

It is a self number, because there is not a number n which added to its sum of digits gives 253450140.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253450147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71091 + ... + 74570.

It is an arithmetic number, because the mean of its divisors is an integer number (15294510).

Almost surely, 2^253450140 is an apocalyptic number.

253450140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

253450140 is an abundant number, since it is smaller than the sum of its proper divisors (480686340).

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

253450140 is a wasteful number, since it uses less digits than its factorization.

253450140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145702 (or 145700 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 253450140 is about 15920.1174618782. The cubic root of 253450140 is about 632.8452311861.

The spelling of 253450140 in words is "two hundred fifty-three million, four hundred fifty thousand, one hundred forty".