78260626 has 4 divisors (see below), whose sum is σ = 117390942. Its totient is φ = 39130312.

The previous prime is 78260569. The next prime is 78260627. The reversal of 78260626 is 62606287.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 62606287 = 983 ⋅63689.

It can be written as a sum of positive squares in only one way, i.e., 78057225 + 203401 = 8835^2 + 451^2 .

It is a super-2 number, since 2×78260626² = 12249451163823752, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (78260627) by changing a digit.

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 as a sum of consecutive naturals, namely, 19565155 + ... + 19565158.

Almost surely, 2^78260626 is an apocalyptic number.

78260626 is a deficient number, since it is larger than the sum of its proper divisors (39130316).

78260626 is a wasteful number, since it uses less digits than its factorization.

78260626 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39130315.

The product of its (nonzero) digits is 48384, while the sum is 37.

The square root of 78260626 is about 8846.5036031191. The cubic root of 78260626 is about 427.7412220007.

The spelling of 78260626 in words is "seventy-eight million, two hundred sixty thousand, six hundred twenty-six".