26987090 has 16 divisors (see below), whose sum is σ = 52313688. Its totient is φ = 9964416.

The previous prime is 26987089. The next prime is 26987113. The reversal of 26987090 is 9078962.

It can be written as a sum of positive squares in 4 ways, for example, as 21893041 + 5094049 = 4679^2 + 2257^2 .

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 103667 + ... + 103926.

Almost surely, 2^26987090 is an apocalyptic number.

26987090 is a deficient number, since it is larger than the sum of its proper divisors (25326598).

26987090 is a wasteful number, since it uses less digits than its factorization.

26987090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207613.

The product of its (nonzero) digits is 54432, while the sum is 41.

The square root of 26987090 is about 5194.9100088452. The cubic root of 26987090 is about 299.9521775623.

The spelling of 26987090 in words is "twenty-six million, nine hundred eighty-seven thousand, ninety".