26028691 has 4 divisors (see below), whose sum is σ = 28030912. Its totient is φ = 24026472.

The previous prime is 26028677. The next prime is 26028719. The reversal of 26028691 is 19682062.

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 26028691 - 2⁵ = 26028659 is a prime.

It is not an unprimeable number, because it can be changed into a prime (26028601) 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, 1001091 + ... + 1001116.

It is an arithmetic number, because the mean of its divisors is an integer number (7007728).

Almost surely, 2^26028691 is an apocalyptic number.

26028691 is a deficient number, since it is larger than the sum of its proper divisors (2002221).

26028691 is a wasteful number, since it uses less digits than its factorization.

26028691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2002220.

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 26028691 is about 5101.8321218950. The cubic root of 26028691 is about 296.3585372627.

The spelling of 26028691 in words is "twenty-six million, twenty-eight thousand, six hundred ninety-one".