77280334 has 48 divisors (see below), whose sum is σ = 134392320. Its totient is φ = 33194880.

The previous prime is 77280289. The next prime is 77280337. The reversal of 77280334 is 43308277.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a self number, because there is not a number n which added to its sum of digits gives 77280334.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77280337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 340329 + ... + 340555.

It is an arithmetic number, because the mean of its divisors is an integer number (2799840).

Almost surely, 2^77280334 is an apocalyptic number.

77280334 is a deficient number, since it is larger than the sum of its proper divisors (57111986).

77280334 is a wasteful number, since it uses less digits than its factorization.

77280334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 313 (or 296 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 34.

The square root of 77280334 is about 8790.9233872216. The cubic root of 77280334 is about 425.9477516060.

The spelling of 77280334 in words is "seventy-seven million, two hundred eighty thousand, three hundred thirty-four".