255644364 has 12 divisors (see below), whose sum is σ = 596503544. Its totient is φ = 85214784.

The previous prime is 255644357. The next prime is 255644369. The reversal of 255644364 is 463446552.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (255644369) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10651837 + ... + 10651860.

Almost surely, 2^255644364 is an apocalyptic number.

It is an amenable number.

255644364 is an abundant number, since it is smaller than the sum of its proper divisors (340859180).

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

255644364 is a wasteful number, since it uses less digits than its factorization.

255644364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21303704 (or 21303702 counting only the distinct ones).

The product of its digits is 345600, while the sum is 39.

The square root of 255644364 is about 15988.8825125460. The cubic root of 255644364 is about 634.6662548595. Note that the first 3 decimals are identical.

The spelling of 255644364 in words is "two hundred fifty-five million, six hundred forty-four thousand, three hundred sixty-four".