253453340 has 96 divisors (see below), whose sum is σ = 650643840. Its totient is φ = 80953344.

The previous prime is 253453279. The next prime is 253453379. The reversal of 253453340 is 43354352.

253453340 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 258932 + ... + 259908.

It is an arithmetic number, because the mean of its divisors is an integer number (6777540).

Almost surely, 2^253453340 is an apocalyptic number.

253453340 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 253453340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (325321920).

253453340 is an abundant number, since it is smaller than the sum of its proper divisors (397190500).

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

253453340 is a wasteful number, since it uses less digits than its factorization.

253453340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1119 (or 1117 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 29.

The square root of 253453340 is about 15920.2179633320. The cubic root of 253453340 is about 632.8478945584.

The spelling of 253453340 in words is "two hundred fifty-three million, four hundred fifty-three thousand, three hundred forty".