27990450 has 36 divisors (see below), whose sum is σ = 75202218. Its totient is φ = 7464000.

The previous prime is 27990421. The next prime is 27990461. The reversal of 27990450 is 5409972.

It can be written as a sum of positive squares in 3 ways, for example, as 14085009 + 13905441 = 3753^2 + 3729^2 .

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 17 ways as a sum of consecutive naturals, for example, 30651 + ... + 31550.

Almost surely, 2^27990450 is an apocalyptic number.

27990450 is an abundant number, since it is smaller than the sum of its proper divisors (47211768).

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

27990450 is a wasteful number, since it uses less digits than its factorization.

27990450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62219 (or 62211 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 36.

The square root of 27990450 is about 5290.6001549919. The cubic root of 27990450 is about 303.6243701373.

The spelling of 27990450 in words is "twenty-seven million, nine hundred ninety thousand, four hundred fifty".