26228931 has 4 divisors (see below), whose sum is σ = 34971912. Its totient is φ = 17485952.

The previous prime is 26228927. The next prime is 26228941. The reversal of 26228931 is 13982262.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 26228931 - 2² = 26228927 is a prime.

It is a super-2 number, since 2×26228931² = 1375913642805522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 26228892 and 26228901.

It is not an unprimeable number, because it can be changed into a prime (26228941) 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, 4371486 + ... + 4371491.

It is an arithmetic number, because the mean of its divisors is an integer number (8742978).

Almost surely, 2^26228931 is an apocalyptic number.

26228931 is a deficient number, since it is larger than the sum of its proper divisors (8742981).

26228931 is an equidigital number, since it uses as much as digits as its factorization.

26228931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8742980.

The product of its digits is 10368, while the sum is 33.

The square root of 26228931 is about 5121.4188463745. The cubic root of 26228931 is about 297.1165636625.

The spelling of 26228931 in words is "twenty-six million, two hundred twenty-eight thousand, nine hundred thirty-one".