27742990 has 16 divisors (see below), whose sum is σ = 54477360. Its totient is φ = 10088320.

The previous prime is 27742987. The next prime is 27743003. The reversal of 27742990 is 9924772.

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, 125995 + ... + 126214.

It is an arithmetic number, because the mean of its divisors is an integer number (3404835).

Almost surely, 2^27742990 is an apocalyptic number.

27742990 is a deficient number, since it is larger than the sum of its proper divisors (26734370).

27742990 is a wasteful number, since it uses less digits than its factorization.

27742990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252227.

The product of its (nonzero) digits is 63504, while the sum is 40.

The square root of 27742990 is about 5267.1614746465. The cubic root of 27742990 is about 302.7269521497.

The spelling of 27742990 in words is "twenty-seven million, seven hundred forty-two thousand, nine hundred ninety".