27404990 has 16 divisors (see below), whose sum is σ = 49658400. Its totient is φ = 10888800.

The previous prime is 27404989. The next prime is 27405031. The reversal of 27404990 is 9940472.

It is a self number, because there is not a number n which added to its sum of digits gives 27404990.

It is a congruent 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, 7565 + ... + 10584.

It is an arithmetic number, because the mean of its divisors is an integer number (3103650).

Almost surely, 2^27404990 is an apocalyptic number.

27404990 is a deficient number, since it is larger than the sum of its proper divisors (22253410).

27404990 is a wasteful number, since it uses less digits than its factorization.

27404990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18307.

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 27404990 is about 5234.9775548707. The cubic root of 27404990 is about 301.4925252106.

The spelling of 27404990 in words is "twenty-seven million, four hundred four thousand, nine hundred ninety".