27017990 has 16 divisors (see below), whose sum is σ = 48822048. Its totient is φ = 10765056.

The previous prime is 27017989. The next prime is 27017999. The reversal of 27017990 is 9971072.

It is a self number, because there is not a number n which added to its sum of digits gives 27017990.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27017999) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2507 + ... + 7766.

It is an arithmetic number, because the mean of its divisors is an integer number (3051378).

Almost surely, 2^27017990 is an apocalyptic number.

27017990 is a deficient number, since it is larger than the sum of its proper divisors (21804058).

27017990 is a wasteful number, since it uses less digits than its factorization.

27017990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10543.

The product of its (nonzero) digits is 7938, while the sum is 35.

The square root of 27017990 is about 5197.8832230053. The cubic root of 27017990 is about 300.0666148367.

The spelling of 27017990 in words is "twenty-seven million, seventeen thousand, nine hundred ninety".