253539740 has 24 divisors (see below), whose sum is σ = 532783440. Its totient is φ = 101349248.

The previous prime is 253539733. The next prime is 253539773. The reversal of 253539740 is 47935352.

It is a junction number, because it is equal to n+sod(n) for n = 253539694 and 253539703.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36896 + ... + 43224.

It is an arithmetic number, because the mean of its divisors is an integer number (22199310).

Almost surely, 2^253539740 is an apocalyptic number.

253539740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

253539740 is an abundant number, since it is smaller than the sum of its proper divisors (279243700).

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

253539740 is a wasteful number, since it uses less digits than its factorization.

253539740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8341 (or 8339 counting only the distinct ones).

The product of its (nonzero) digits is 113400, while the sum is 38.

The square root of 253539740 is about 15922.9312628046. The cubic root of 253539740 is about 632.9197971371.

The spelling of 253539740 in words is "two hundred fifty-three million, five hundred thirty-nine thousand, seven hundred forty".