26991992 has 16 divisors (see below), whose sum is σ = 50690040. Its totient is φ = 13474656.

The previous prime is 26991983. The next prime is 26992033. The reversal of 26991992 is 29919962.

26991992 is nontrivially palindromic in base 5.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3563 + ... + 8165.

Almost surely, 2^26991992 is an apocalyptic number.

It is an amenable number.

26991992 is a deficient number, since it is larger than the sum of its proper divisors (23698048).

26991992 is a wasteful number, since it uses less digits than its factorization.

26991992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5342 (or 5338 counting only the distinct ones).

The product of its digits is 157464, while the sum is 47.

The square root of 26991992 is about 5195.3817954025. The cubic root of 26991992 is about 299.9703378080.

The spelling of 26991992 in words is "twenty-six million, nine hundred ninety-one thousand, nine hundred ninety-two".