26401923 has 8 divisors (see below), whose sum is σ = 39114000. Its totient is φ = 17601264.

The previous prime is 26401913. The next prime is 26401943. The reversal of 26401923 is 32910462.

26401923 is a `hidden beast` number, since 2 + 640 + 19 + 2 + 3 = 666.

It is not a de Polignac number, because 26401923 - 2⁵ = 26401891 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 977849 = 26401923 / (2 + 6 + 4 + 0 + 1 + 9 + 2 + 3).

It is not an unprimeable number, because it can be changed into a prime (26401913) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 488898 + ... + 488951.

It is an arithmetic number, because the mean of its divisors is an integer number (4889250).

Almost surely, 2^26401923 is an apocalyptic number.

26401923 is a deficient number, since it is larger than the sum of its proper divisors (12712077).

26401923 is an equidigital number, since it uses as much as digits as its factorization.

26401923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 977858 (or 977852 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 26401923 is about 5138.2801597422. The cubic root of 26401923 is about 297.7683401452.

The spelling of 26401923 in words is "twenty-six million, four hundred one thousand, nine hundred twenty-three".