27249990 has 32 divisors (see below), whose sum is σ = 68843520. Its totient is φ = 6884064.

The previous prime is 27249983. The next prime is 27249991. The reversal of 27249990 is 9994272.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27249991) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23334 + ... + 24473.

It is an arithmetic number, because the mean of its divisors is an integer number (2151360).

Almost surely, 2^27249990 is an apocalyptic number.

27249990 is an abundant number, since it is smaller than the sum of its proper divisors (41593530).

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

27249990 is a wasteful number, since it uses less digits than its factorization.

27249990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47836.

The product of its (nonzero) digits is 81648, while the sum is 42.

The square root of 27249990 is about 5220.1522966289. The cubic root of 27249990 is about 300.9230459302.

The spelling of 27249990 in words is "twenty-seven million, two hundred forty-nine thousand, nine hundred ninety".