78433686 has 24 divisors (see below), whose sum is σ = 170149824. Its totient is φ = 26112240.

The previous prime is 78433679. The next prime is 78433711. The reversal of 78433686 is 68633487.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15640 + ... + 20036.

It is an arithmetic number, because the mean of its divisors is an integer number (7089576).

Almost surely, 2^78433686 is an apocalyptic number.

78433686 is an abundant number, since it is smaller than the sum of its proper divisors (91716138).

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

78433686 is a wasteful number, since it uses less digits than its factorization.

78433686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5396 (or 5393 counting only the distinct ones).

The product of its digits is 580608, while the sum is 45.

The square root of 78433686 is about 8856.2794671352. The cubic root of 78433686 is about 428.0562820853.

The spelling of 78433686 in words is "seventy-eight million, four hundred thirty-three thousand, six hundred eighty-six".