26397723 has 20 divisors (see below), whose sum is σ = 38780840. Its totient is φ = 15972000.

The previous prime is 26397713. The next prime is 26397737. The reversal of 26397723 is 32779362.

It is not a de Polignac number, because 26397723 - 2⁶ = 26397659 is a prime.

It is a Duffinian number.

Its product of digits (95256) is a multiple of the sum of its prime factors (648).

It is not an unprimeable number, because it can be changed into a prime (26397703) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 43623 + ... + 44223.

It is an arithmetic number, because the mean of its divisors is an integer number (1939042).

Almost surely, 2^26397723 is an apocalyptic number.

26397723 is a deficient number, since it is larger than the sum of its proper divisors (12383117).

26397723 is an frugal number, since it uses more digits than its factorization.

26397723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 648 (or 615 counting only the distinct ones).

The product of its digits is 95256, while the sum is 39.

The square root of 26397723 is about 5137.8714464260. The cubic root of 26397723 is about 297.7525497127.

The spelling of 26397723 in words is "twenty-six million, three hundred ninety-seven thousand, seven hundred twenty-three".