253470 has 64 divisors (see below), whose sum is σ = 746496. Its totient is φ = 53760.

The previous prime is 253469. The next prime is 253481. The reversal of 253470 is 74352.

It is a happy number.

253470 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Curzon number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 253470.

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, 3535 + ... + 3605.

It is an arithmetic number, because the mean of its divisors is an integer number (11664).

2²⁵³⁴⁷⁰ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 253470, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (373248).

253470 is an abundant number, since it is smaller than the sum of its proper divisors (493026).

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

253470 is a wasteful number, since it uses less digits than its factorization.

253470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105.

The product of its (nonzero) digits is 840, while the sum is 21.

The square root of 253470 is about 503.4580419459. The cubic root of 253470 is about 63.2861760378.

The spelling of 253470 in words is "two hundred fifty-three thousand, four hundred seventy".