78254423 has 4 divisors (see below), whose sum is σ = 84274008. Its totient is φ = 72234840.

The previous prime is 78254411. The next prime is 78254431. The reversal of 78254423 is 32445287.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 78254423 - 2⁸ = 78254167 is a prime.

It is a super-2 number, since 2×78254423² = 12247509438125858, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78254443) 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, 3009773 + ... + 3009798.

It is an arithmetic number, because the mean of its divisors is an integer number (21068502).

Almost surely, 2^78254423 is an apocalyptic number.

78254423 is a deficient number, since it is larger than the sum of its proper divisors (6019585).

78254423 is a wasteful number, since it uses less digits than its factorization.

78254423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6019584.

The product of its digits is 53760, while the sum is 35.

The square root of 78254423 is about 8846.1530056856. The cubic root of 78254423 is about 427.7299206646.

The spelling of 78254423 in words is "seventy-eight million, two hundred fifty-four thousand, four hundred twenty-three".