78906336 has 24 divisors (see below), whose sum is σ = 207129384. Its totient is φ = 26302080.

The previous prime is 78906329. The next prime is 78906337. The reversal of 78906336 is 63360987.

It is a tau number, because it is divible by the number of its divisors (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78906337) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 410875 + ... + 411066.

It is an arithmetic number, because the mean of its divisors is an integer number (8630391).

Almost surely, 2^78906336 is an apocalyptic number.

It is an amenable number.

78906336 is an abundant number, since it is smaller than the sum of its proper divisors (128223048).

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

78906336 is a wasteful number, since it uses less digits than its factorization.

78906336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 821954 (or 821946 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 42.

The square root of 78906336 is about 8882.9238429697. The cubic root of 78906336 is about 428.9143987301.

The spelling of 78906336 in words is "seventy-eight million, nine hundred six thousand, three hundred thirty-six".