78842206 has 16 divisors (see below), whose sum is σ = 123596928. Its totient is φ = 37648600.

The previous prime is 78842189. The next prime is 78842249. The reversal of 78842206 is 60224887.

78842206 = 391² + 392² + ... + 666².

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49401 + ... + 50971.

It is an arithmetic number, because the mean of its divisors is an integer number (7724808).

Almost surely, 2^78842206 is an apocalyptic number.

78842206 is a deficient number, since it is larger than the sum of its proper divisors (44754722).

78842206 is a wasteful number, since it uses less digits than its factorization.

78842206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2687.

The product of its (nonzero) digits is 43008, while the sum is 37.

The square root of 78842206 is about 8879.3133743550. The cubic root of 78842206 is about 428.7981692149.

The spelling of 78842206 in words is "seventy-eight million, eight hundred forty-two thousand, two hundred six".