26278473 has 16 divisors (see below), whose sum is σ = 38755136. Its totient is φ = 15733440.

The previous prime is 26278457. The next prime is 26278477. The reversal of 26278473 is 37487262.

It is not a de Polignac number, because 26278473 - 2⁴ = 26278457 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26278477) 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, 7663 + ... + 10548.

It is an arithmetic number, because the mean of its divisors is an integer number (2422196).

Almost surely, 2^26278473 is an apocalyptic number.

It is an amenable number.

26278473 is a deficient number, since it is larger than the sum of its proper divisors (12476663).

26278473 is a wasteful number, since it uses less digits than its factorization.

26278473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18264.

The product of its digits is 112896, while the sum is 39.

The square root of 26278473 is about 5126.2533101672. The cubic root of 26278473 is about 297.3035135971.

The spelling of 26278473 in words is "twenty-six million, two hundred seventy-eight thousand, four hundred seventy-three".