253428681 has 16 divisors (see below), whose sum is σ = 369024768. Its totient is φ = 153426000.

The previous prime is 253428671. The next prime is 253428683. The reversal of 253428681 is 186824352.

253428681 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 253428681 - 2⁵ = 253428649 is a prime.

It is a super-2 number, since 2×253428681² = 128452192706799522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (253428683) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31030 + ... + 38336.

It is an arithmetic number, because the mean of its divisors is an integer number (23064048).

Almost surely, 2^253428681 is an apocalyptic number.

It is an amenable number.

253428681 is a deficient number, since it is larger than the sum of its proper divisors (115596087).

253428681 is a wasteful number, since it uses less digits than its factorization.

253428681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8372.

The product of its digits is 92160, while the sum is 39.

The square root of 253428681 is about 15919.4434890168. The cubic root of 253428681 is about 632.8273701990.

The spelling of 253428681 in words is "two hundred fifty-three million, four hundred twenty-eight thousand, six hundred eighty-one".