77284256 has 24 divisors (see below), whose sum is σ = 173890080. Its totient is φ = 33121728.

The previous prime is 77284253. The next prime is 77284327. The reversal of 77284256 is 65248277.

It is not an unprimeable number, because it can be changed into a prime (77284253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 172286 + ... + 172733.

It is an arithmetic number, because the mean of its divisors is an integer number (7245420).

Almost surely, 2^77284256 is an apocalyptic number.

It is an amenable number.

77284256 is an abundant number, since it is smaller than the sum of its proper divisors (96605824).

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

77284256 is a wasteful number, since it uses less digits than its factorization.

77284256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 345036 (or 345028 counting only the distinct ones).

The product of its digits is 188160, while the sum is 41.

The square root of 77284256 is about 8791.1464553834. The cubic root of 77284256 is about 425.9549571426.

It can be divided in two parts, 77284 and 256, that multiplied together give a square (19784704 = 4448²).

The spelling of 77284256 in words is "seventy-seven million, two hundred eighty-four thousand, two hundred fifty-six".