27491490 has 48 divisors (see below), whose sum is σ = 76979448. Its totient is φ = 6766848.

The previous prime is 27491489. The next prime is 27491521. The reversal of 27491490 is 9419472.

It can be written as a sum of positive squares in 4 ways, for example, as 21095649 + 6395841 = 4593^2 + 2529^2 .

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 23 ways as a sum of consecutive naturals, for example, 10579 + ... + 12918.

Almost surely, 2^27491490 is an apocalyptic number.

27491490 is an abundant number, since it is smaller than the sum of its proper divisors (49487958).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

27491490 is a wasteful number, since it uses less digits than its factorization.

27491490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23523 (or 23520 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 27491490 is about 5243.2327814050. The cubic root of 27491490 is about 301.8093983190.

The spelling of 27491490 in words is "twenty-seven million, four hundred ninety-one thousand, four hundred ninety".