27899490 has 16 divisors (see below), whose sum is σ = 66958848. Its totient is φ = 7439856.

The previous prime is 27899471. The next prime is 27899491. The reversal of 27899490 is 9499872.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (27899491) by changing a digit.

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, 464962 + ... + 465021.

It is an arithmetic number, because the mean of its divisors is an integer number (4184928).

Almost surely, 2^27899490 is an apocalyptic number.

27899490 is an abundant number, since it is smaller than the sum of its proper divisors (39059358).

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

27899490 is a wasteful number, since it uses less digits than its factorization.

27899490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 929993.

The product of its (nonzero) digits is 326592, while the sum is 48.

The square root of 27899490 is about 5281.9967815212. The cubic root of 27899490 is about 303.2951192316.

The spelling of 27899490 in words is "twenty-seven million, eight hundred ninety-nine thousand, four hundred ninety".