78826851 has 20 divisors (see below), whose sum is σ = 118065024. Its totient is φ = 52412400.

The previous prime is 78826837. The next prime is 78826861. The reversal of 78826851 is 15862887.

It is not a de Polignac number, because 78826851 - 2⁹ = 78826339 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 78826797 and 78826806.

It is not an unprimeable number, because it can be changed into a prime (78826861) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 36286 + ... + 38396.

Almost surely, 2^78826851 is an apocalyptic number.

78826851 is a deficient number, since it is larger than the sum of its proper divisors (39238173).

78826851 is a wasteful number, since it uses less digits than its factorization.

78826851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2584 (or 2575 counting only the distinct ones).

The product of its digits is 215040, while the sum is 45.

The square root of 78826851 is about 8878.4486820615. The cubic root of 78826851 is about 428.7703303888.

The spelling of 78826851 in words is "seventy-eight million, eight hundred twenty-six thousand, eight hundred fifty-one".