253713128 has 8 divisors (see below), whose sum is σ = 475712130. Its totient is φ = 126856560.

The previous prime is 253713113. The next prime is 253713143. The reversal of 253713128 is 821317352.

It is an interprime number because it is at equal distance from previous prime (253713113) and next prime (253713143).

It can be written as a sum of positive squares in only one way, i.e., 151339204 + 102373924 = 12302^2 + 10118^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 253713094 and 253713103.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 15857063 + ... + 15857078.

Almost surely, 2^253713128 is an apocalyptic number.

It is an amenable number.

253713128 is a deficient number, since it is larger than the sum of its proper divisors (221999002).

253713128 is a wasteful number, since it uses less digits than its factorization.

253713128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31714147 (or 31714143 counting only the distinct ones).

The product of its digits is 10080, while the sum is 32.

The square root of 253713128 is about 15928.3749328047. The cubic root of 253713128 is about 633.0640423630.

The spelling of 253713128 in words is "two hundred fifty-three million, seven hundred thirteen thousand, one hundred twenty-eight".