77330256 has 40 divisors (see below), whose sum is σ = 202308480. Its totient is φ = 25449216.

The previous prime is 77330251. The next prime is 77330273. The reversal of 77330256 is 65203377.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77330251) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6405 + ... + 13988.

It is an arithmetic number, because the mean of its divisors is an integer number (5057712).

Almost surely, 2^77330256 is an apocalyptic number.

It is an amenable number.

77330256 is an abundant number, since it is smaller than the sum of its proper divisors (124978224).

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

77330256 is a wasteful number, since it uses less digits than its factorization.

77330256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20483 (or 20477 counting only the distinct ones).

The product of its (nonzero) digits is 26460, while the sum is 33.

The square root of 77330256 is about 8793.7623347461. The cubic root of 77330256 is about 426.0394505994.

The spelling of 77330256 in words is "seventy-seven million, three hundred thirty thousand, two hundred fifty-six".