27690090 has 32 divisors (see below), whose sum is σ = 66890880. Its totient is φ = 7335744.

The previous prime is 27690079. The next prime is 27690101. The reversal of 27690090 is 9009672.

It is an interprime number because it is at equal distance from previous prime (27690079) and next prime (27690101).

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1771 + ... + 7649.

It is an arithmetic number, because the mean of its divisors is an integer number (2090340).

Almost surely, 2^27690090 is an apocalyptic number.

27690090 is an abundant number, since it is smaller than the sum of its proper divisors (39200790).

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

27690090 is a wasteful number, since it uses less digits than its factorization.

27690090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6046.

The product of its (nonzero) digits is 6804, while the sum is 33.

The square root of 27690090 is about 5262.1373984342. The cubic root of 27690090 is about 302.5344176853.

The spelling of 27690090 in words is "twenty-seven million, six hundred ninety thousand, ninety".