27496989 has 20 divisors (see below), whose sum is σ = 44237116. Its totient is φ = 16920576.

The previous prime is 27496981. The next prime is 27496991. The reversal of 27496989 is 98969472.

It can be written as a sum of positive squares in 2 ways, for example, as 10208025 + 17288964 = 3195^2 + 4158^2 .

It is not a de Polignac number, because 27496989 - 2³ = 27496981 is a prime.

It is a super-2 number, since 2×27496989² = 1512168808132242, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27496981) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 12004 + ... + 14109.

Almost surely, 2^27496989 is an apocalyptic number.

It is an amenable number.

27496989 is a deficient number, since it is larger than the sum of its proper divisors (16740127).

27496989 is a wasteful number, since it uses less digits than its factorization.

27496989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26138 (or 26129 counting only the distinct ones).

The product of its digits is 1959552, while the sum is 54.

The square root of 27496989 is about 5243.7571454063. The cubic root of 27496989 is about 301.8295201729.

The spelling of 27496989 in words is "twenty-seven million, four hundred ninety-six thousand, nine hundred eighty-nine".