78856273 has 4 divisors (see below), whose sum is σ = 80192880. Its totient is φ = 77519668.

The previous prime is 78856199. The next prime is 78856321. The reversal of 78856273 is 37265887.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 37265887 = 17 ⋅2192111.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-78856273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78856573) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 668215 + ... + 668332.

It is an arithmetic number, because the mean of its divisors is an integer number (20048220).

Almost surely, 2^78856273 is an apocalyptic number.

It is an amenable number.

78856273 is a deficient number, since it is larger than the sum of its proper divisors (1336607).

78856273 is a wasteful number, since it uses less digits than its factorization.

78856273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1336606.

The product of its digits is 564480, while the sum is 46.

The square root of 78856273 is about 8880.1054610855. The cubic root of 78856273 is about 428.8236697069.

It can be divided in two parts, 7885627 and 3, that multiplied together give a triangular number (23656881 = T₆₈₇₈).

The spelling of 78856273 in words is "seventy-eight million, eight hundred fifty-six thousand, two hundred seventy-three".