26811491 has 16 divisors (see below), whose sum is σ = 32153088. Its totient is φ = 21859200.

The previous prime is 26811461. The next prime is 26811511. The reversal of 26811491 is 19411862.

It is not a de Polignac number, because 26811491 - 2¹⁴ = 26795107 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26811401) 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, 38456 + ... + 39146.

It is an arithmetic number, because the mean of its divisors is an integer number (2009568).

Almost surely, 2^26811491 is an apocalyptic number.

26811491 is a deficient number, since it is larger than the sum of its proper divisors (5341597).

26811491 is a wasteful number, since it uses less digits than its factorization.

26811491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 962.

The product of its digits is 3456, while the sum is 32.

The square root of 26811491 is about 5177.9813634273. The cubic root of 26811491 is about 299.3001873286.

The spelling of 26811491 in words is "twenty-six million, eight hundred eleven thousand, four hundred ninety-one".