77830132 has 6 divisors (see below), whose sum is σ = 136202738. Its totient is φ = 38915064.

The previous prime is 77830087. The next prime is 77830139. The reversal of 77830132 is 23103877.

It can be written as a sum of positive squares in only one way, i.e., 69956496 + 7873636 = 8364^2 + 2806^2 .

It is a junction number, because it is equal to n+sod(n) for n = 77830094 and 77830103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77830139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9728763 + ... + 9728770.

Almost surely, 2^77830132 is an apocalyptic number.

It is an amenable number.

77830132 is a deficient number, since it is larger than the sum of its proper divisors (58372606).

77830132 is a wasteful number, since it uses less digits than its factorization.

77830132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19457537 (or 19457535 counting only the distinct ones).

The product of its (nonzero) digits is 7056, while the sum is 31.

The square root of 77830132 is about 8822.1387429580. The cubic root of 77830132 is about 426.9554769323.

The spelling of 77830132 in words is "seventy-seven million, eight hundred thirty thousand, one hundred thirty-two".