77289982 has 32 divisors (see below), whose sum is σ = 150833664. Its totient is φ = 28802400.

The previous prime is 77289911. The next prime is 77289983. The reversal of 77289982 is 28998277.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77289983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7369 + ... + 14452.

It is an arithmetic number, because the mean of its divisors is an integer number (4713552).

Almost surely, 2^77289982 is an apocalyptic number.

77289982 is a deficient number, since it is larger than the sum of its proper divisors (73543682).

77289982 is a wasteful number, since it uses less digits than its factorization.

77289982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21864.

The product of its digits is 1016064, while the sum is 52.

The square root of 77289982 is about 8791.4721179106. The cubic root of 77289982 is about 425.9654765678.

The spelling of 77289982 in words is "seventy-seven million, two hundred eighty-nine thousand, nine hundred eighty-two".