77986032 has 80 divisors (see below), whose sum is σ = 213557760. Its totient is φ = 24454656.

The previous prime is 77986009. The next prime is 77986037. The reversal of 77986032 is 23068977.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77986037) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 212313 + ... + 212679.

It is an arithmetic number, because the mean of its divisors is an integer number (2669472).

Almost surely, 2^77986032 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 77986032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (106778880).

77986032 is an abundant number, since it is smaller than the sum of its proper divisors (135571728).

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

77986032 is a wasteful number, since it uses less digits than its factorization.

77986032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 630 (or 624 counting only the distinct ones).

The product of its (nonzero) digits is 127008, while the sum is 42.

The square root of 77986032 is about 8830.9700486413. The cubic root of 77986032 is about 427.2403621615.

The spelling of 77986032 in words is "seventy-seven million, nine hundred eighty-six thousand, thirty-two".