253747284 has 60 divisors (see below), whose sum is σ = 690793824. Its totient is φ = 72490992.

The previous prime is 253747271. The next prime is 253747297. The reversal of 253747284 is 482747352.

It is a happy number.

253747284 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (253747271) and next prime (253747297).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 24409 + ... + 33215.

Almost surely, 2^253747284 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 253747284, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (345396912).

253747284 is an abundant number, since it is smaller than the sum of its proper divisors (437046540).

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

253747284 is an equidigital number, since it uses as much as digits as its factorization.

253747284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8842 (or 8819 counting only the distinct ones).

The product of its digits is 376320, while the sum is 42.

The square root of 253747284 is about 15929.4470713832. The cubic root of 253747284 is about 633.0924497291.

The spelling of 253747284 in words is "two hundred fifty-three million, seven hundred forty-seven thousand, two hundred eighty-four".