77011432 has 8 divisors (see below), whose sum is σ = 144396450. Its totient is φ = 38505712.

The previous prime is 77011379. The next prime is 77011447. The reversal of 77011432 is 23411077.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 71470116 + 5541316 = 8454^2 + 2354^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 77011397 and 77011406.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4813207 + ... + 4813222.

Almost surely, 2^77011432 is an apocalyptic number.

It is an amenable number.

77011432 is a deficient number, since it is larger than the sum of its proper divisors (67385018).

77011432 is a wasteful number, since it uses less digits than its factorization.

77011432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9626435 (or 9626431 counting only the distinct ones).

The product of its (nonzero) digits is 1176, while the sum is 25.

The square root of 77011432 is about 8775.6157618711. The cubic root of 77011432 is about 425.4531397537.

The spelling of 77011432 in words is "seventy-seven million, eleven thousand, four hundred thirty-two".