255577428 has 36 divisors (see below), whose sum is σ = 646769760. Its totient is φ = 85096656.

The previous prime is 255577409. The next prime is 255577433. The reversal of 255577428 is 824775552.

255577428 is a `hidden beast` number, since 2 + 5 + 557 + 74 + 28 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

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 in 11 ways as a sum of consecutive naturals, for example, 33201 + ... + 40167.

Almost surely, 2^255577428 is an apocalyptic number.

It is an amenable number.

255577428 is an abundant number, since it is smaller than the sum of its proper divisors (391192332).

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

255577428 is a wasteful number, since it uses less digits than its factorization.

255577428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7996 (or 7991 counting only the distinct ones).

The product of its digits is 784000, while the sum is 45.

The square root of 255577428 is about 15986.7891710625. The cubic root of 255577428 is about 634.6108579427.

The spelling of 255577428 in words is "two hundred fifty-five million, five hundred seventy-seven thousand, four hundred twenty-eight".