78422706 has 24 divisors (see below), whose sum is σ = 171828540. Its totient is φ = 25846656.

The previous prime is 78422651. The next prime is 78422711. The reversal of 78422706 is 60722487.

It can be written as a sum of positive squares in 2 ways, for example, as 75846681 + 2576025 = 8709^2 + 1605^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22875 + ... + 26078.

Almost surely, 2^78422706 is an apocalyptic number.

78422706 is an abundant number, since it is smaller than the sum of its proper divisors (93405834).

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

78422706 is a wasteful number, since it uses less digits than its factorization.

78422706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49050 (or 49047 counting only the distinct ones).

The product of its (nonzero) digits is 37632, while the sum is 36.

The square root of 78422706 is about 8855.6595463014. The cubic root of 78422706 is about 428.0363064959.

The spelling of 78422706 in words is "seventy-eight million, four hundred twenty-two thousand, seven hundred six".