26987481 has 12 divisors (see below), whose sum is σ = 39209508. Its totient is φ = 17886624.

The previous prime is 26987479. The next prime is 26987507. The reversal of 26987481 is 18478962.

It can be written as a sum of positive squares in 2 ways, for example, as 12425625 + 14561856 = 3525^2 + 3816^2 .

It is not a de Polignac number, because 26987481 - 2¹ = 26987479 is a prime.

It is a super-2 number, since 2×26987481² = 1456648261450722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (26987461) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7110 + ... + 10223.

It is an arithmetic number, because the mean of its divisors is an integer number (3267459).

Almost surely, 2^26987481 is an apocalyptic number.

It is an amenable number.

26987481 is a deficient number, since it is larger than the sum of its proper divisors (12222027).

26987481 is a wasteful number, since it uses less digits than its factorization.

26987481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17512 (or 17509 counting only the distinct ones).

The product of its digits is 193536, while the sum is 45.

The square root of 26987481 is about 5194.9476416996. The cubic root of 26987481 is about 299.9536261653.

The spelling of 26987481 in words is "twenty-six million, nine hundred eighty-seven thousand, four hundred eighty-one".