77774328 has 24 divisors (see below), whose sum is σ = 210639000. Its totient is φ = 25924752.

The previous prime is 77774321. The next prime is 77774357. The reversal of 77774328 is 82347777.

It is a tau number, because it is divible by the number of its divisors (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77774321) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 540028 + ... + 540171.

It is an arithmetic number, because the mean of its divisors is an integer number (8776625).

Almost surely, 2^77774328 is an apocalyptic number.

It is an amenable number.

77774328 is an abundant number, since it is smaller than the sum of its proper divisors (132864672).

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

77774328 is a wasteful number, since it uses less digits than its factorization.

77774328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1080211 (or 1080204 counting only the distinct ones).

The product of its digits is 460992, while the sum is 45.

The square root of 77774328 is about 8818.9754506972. The cubic root of 77774328 is about 426.8534105498.

The spelling of 77774328 in words is "seventy-seven million, seven hundred seventy-four thousand, three hundred twenty-eight".