78906486 has 32 divisors (see below), whose sum is σ = 167751648. Its totient is φ = 24657920.

The previous prime is 78906479. The next prime is 78906521. The reversal of 78906486 is 68460987.

It is a Curzon number.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 27286 + ... + 30038.

It is an arithmetic number, because the mean of its divisors is an integer number (5242239).

Almost surely, 2^78906486 is an apocalyptic number.

78906486 is an abundant number, since it is smaller than the sum of its proper divisors (88845162).

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

78906486 is a wasteful number, since it uses less digits than its factorization.

78906486 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3056.

The product of its (nonzero) digits is 580608, while the sum is 48.

The square root of 78906486 is about 8882.9322861316. The cubic root of 78906486 is about 428.9146705169.

The spelling of 78906486 in words is "seventy-eight million, nine hundred six thousand, four hundred eighty-six".