77620232 has 16 divisors (see below), whose sum is σ = 154099260. Its totient is φ = 36527104.

The previous prime is 77620229. The next prime is 77620271. The reversal of 77620232 is 23202677.

It can be written as a sum of positive squares in 2 ways, for example, as 74063236 + 3556996 = 8606^2 + 1886^2 .

It is a junction number, because it is equal to n+sod(n) for n = 77620195 and 77620204.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 285233 + ... + 285504.

Almost surely, 2^77620232 is an apocalyptic number.

It is an amenable number.

77620232 is a deficient number, since it is larger than the sum of its proper divisors (76479028).

77620232 is a wasteful number, since it uses less digits than its factorization.

77620232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 570760 (or 570756 counting only the distinct ones).

The product of its (nonzero) digits is 7056, while the sum is 29.

The square root of 77620232 is about 8810.2345031219. The cubic root of 77620232 is about 426.5713127842.

The spelling of 77620232 in words is "seventy-seven million, six hundred twenty thousand, two hundred thirty-two".