255713240 has 32 divisors (see below), whose sum is σ = 579566880. Its totient is φ = 101536512.

The previous prime is 255713207. The next prime is 255713261. The reversal of 255713240 is 42317552.

It is a happy number.

It is a super-2 number, since 2×255713240² = 130778522222595200, which contains 22 as substring.

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, 17852 + ... + 28811.

It is an arithmetic number, because the mean of its divisors is an integer number (18111465).

Almost surely, 2^255713240 is an apocalyptic number.

255713240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

255713240 is an abundant number, since it is smaller than the sum of its proper divisors (323853640).

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

255713240 is a wasteful number, since it uses less digits than its factorization.

255713240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46811 (or 46807 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 29.

The square root of 255713240 is about 15991.0362390935. The cubic root of 255713240 is about 634.7232472468.

The spelling of 255713240 in words is "two hundred fifty-five million, seven hundred thirteen thousand, two hundred forty".