77044330 has 48 divisors (see below), whose sum is σ = 156251592. Its totient is φ = 27315200.

The previous prime is 77044313. The next prime is 77044333. The reversal of 77044330 is 3344077.

It can be written as a sum of positive squares in 4 ways, for example, as 24176889 + 52867441 = 4917^2 + 7271^2 .

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (77044333) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 48834 + ... + 50386.

Almost surely, 2^77044330 is an apocalyptic number.

77044330 is an abundant number, since it is smaller than the sum of its proper divisors (79207262).

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

77044330 is a wasteful number, since it uses less digits than its factorization.

77044330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1623 (or 1612 counting only the distinct ones).

The product of its (nonzero) digits is 7056, while the sum is 28.

The square root of 77044330 is about 8777.4899601196. The cubic root of 77044330 is about 425.5137132922.

The spelling of 77044330 in words is "seventy-seven million, forty-four thousand, three hundred thirty".