77882144 has 12 divisors (see below), whose sum is σ = 153330534. Its totient is φ = 38941056.

The previous prime is 77882143. The next prime is 77882179. The reversal of 77882144 is 44128877.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 64192144 + 13690000 = 8012^2 + 3700^2 .

It is not an unprimeable number, because it can be changed into a prime (77882143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1216877 + ... + 1216940.

Almost surely, 2^77882144 is an apocalyptic number.

It is an amenable number.

77882144 is a deficient number, since it is larger than the sum of its proper divisors (75448390).

77882144 is a wasteful number, since it uses less digits than its factorization.

77882144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2433827 (or 2433819 counting only the distinct ones).

The product of its digits is 100352, while the sum is 41.

The square root of 77882144 is about 8825.0860619033. The cubic root of 77882144 is about 427.0505637698.

The spelling of 77882144 in words is "seventy-seven million, eight hundred eighty-two thousand, one hundred forty-four".