78859426 has 16 divisors (see below), whose sum is σ = 119639520. Its totient is φ = 38982240.

The previous prime is 78859421. The next prime is 78859471. The reversal of 78859426 is 62495887.

It is a self number, because there is not a number n which added to its sum of digits gives 78859426.

It is not an unprimeable number, because it can be changed into a prime (78859421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 91590 + ... + 92446.

It is an arithmetic number, because the mean of its divisors is an integer number (7477470).

Almost surely, 2^78859426 is an apocalyptic number.

78859426 is a deficient number, since it is larger than the sum of its proper divisors (40780094).

78859426 is a wasteful number, since it uses less digits than its factorization.

78859426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1329.

The product of its digits is 967680, while the sum is 49.

The square root of 78859426 is about 8880.2829909863. The cubic root of 78859426 is about 428.8293850122.

The spelling of 78859426 in words is "seventy-eight million, eight hundred fifty-nine thousand, four hundred twenty-six".