26398923 has 16 divisors (see below), whose sum is σ = 37209600. Its totient is φ = 16601760.

The previous prime is 26398907. The next prime is 26398969. The reversal of 26398923 is 32989362.

It is not a de Polignac number, because 26398923 - 2⁴ = 26398907 is a prime.

It is not an unprimeable number, because it can be changed into a prime (26398973) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14593 + ... + 16301.

It is an arithmetic number, because the mean of its divisors is an integer number (2325600).

Almost surely, 2^26398923 is an apocalyptic number.

26398923 is a deficient number, since it is larger than the sum of its proper divisors (10810677).

26398923 is a wasteful number, since it uses less digits than its factorization.

26398923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2002.

The product of its digits is 139968, while the sum is 42.

The square root of 26398923 is about 5137.9882249768. The cubic root of 26398923 is about 297.7570614358.

The spelling of 26398923 in words is "twenty-six million, three hundred ninety-eight thousand, nine hundred twenty-three".