77069328 has 40 divisors (see below), whose sum is σ = 227539008. Its totient is φ = 22019712.

The previous prime is 77069323. The next prime is 77069329. The reversal of 77069328 is 82396077.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a self number, because there is not a number n which added to its sum of digits gives 77069328.

It is not an unprimeable number, because it can be changed into a prime (77069323) 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 7 ways as a sum of consecutive naturals, for example, 114351 + ... + 115022.

Almost surely, 2^77069328 is an apocalyptic number.

It is an amenable number.

77069328 is an abundant number, since it is smaller than the sum of its proper divisors (150469680).

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

77069328 is a wasteful number, since it uses less digits than its factorization.

77069328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229391 (or 229385 counting only the distinct ones).

The product of its (nonzero) digits is 127008, while the sum is 42.

The square root of 77069328 is about 8778.9138280313. The cubic root of 77069328 is about 425.5597294043.

The spelling of 77069328 in words is "seventy-seven million, sixty-nine thousand, three hundred twenty-eight".