78262423 has 4 divisors (see below), whose sum is σ = 78280128. Its totient is φ = 78244720.

The previous prime is 78262403. The next prime is 78262469. The reversal of 78262423 is 32426287.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 32426287 = 47 ⋅689921.

It is a cyclic number.

It is not a de Polignac number, because 78262423 - 2⁵ = 78262391 is a prime.

It is a super-2 number, since 2×78262423² = 12250013707661858, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78262403) 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, 3963 + ... + 13123.

It is an arithmetic number, because the mean of its divisors is an integer number (19570032).

Almost surely, 2^78262423 is an apocalyptic number.

78262423 is a deficient number, since it is larger than the sum of its proper divisors (17705).

78262423 is an equidigital number, since it uses as much as digits as its factorization.

78262423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17704.

The product of its digits is 32256, while the sum is 34.

The square root of 78262423 is about 8846.6051680857. The cubic root of 78262423 is about 427.7444958696.

The spelling of 78262423 in words is "seventy-eight million, two hundred sixty-two thousand, four hundred twenty-three".