255742644 has 24 divisors (see below), whose sum is σ = 599415040. Its totient is φ = 84864384.

The previous prime is 255742637. The next prime is 255742673. The reversal of 255742644 is 446247552.

It is a super-2 number, since 2×255742644² = 130808599920221472, 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, 45109 + ... + 50460.

Almost surely, 2^255742644 is an apocalyptic number.

It is an amenable number.

255742644 is an abundant number, since it is smaller than the sum of its proper divisors (343672396).

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

255742644 is a wasteful number, since it uses less digits than its factorization.

255742644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95799 (or 95797 counting only the distinct ones).

The product of its digits is 268800, while the sum is 39.

The square root of 255742644 is about 15991.9556027398. The cubic root of 255742644 is about 634.7475748713.

The spelling of 255742644 in words is "two hundred fifty-five million, seven hundred forty-two thousand, six hundred forty-four".