77434432 has 28 divisors (see below), whose sum is σ = 156270960. Its totient is φ = 38059136.

The previous prime is 77434429. The next prime is 77434447. The reversal of 77434432 is 23443477.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6478 + ... + 14029.

Almost surely, 2^77434432 is an apocalyptic number.

It is an amenable number.

77434432 is an abundant number, since it is smaller than the sum of its proper divisors (78836528).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

77434432 is a wasteful number, since it uses less digits than its factorization.

77434432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20578 (or 20568 counting only the distinct ones).

The product of its digits is 56448, while the sum is 34.

The square root of 77434432 is about 8799.6836306767. The cubic root of 77434432 is about 426.2306787709.

The spelling of 77434432 in words is "seventy-seven million, four hundred thirty-four thousand, four hundred thirty-two".