27000090 has 96 divisors (see below), whose sum is σ = 77366016. Its totient is φ = 6491520.

The previous prime is 27000089. The next prime is 27000109. The reversal of 27000090 is 9000072.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 54745 + ... + 55235.

It is an arithmetic number, because the mean of its divisors is an integer number (805896).

Almost surely, 2^27000090 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 27000090, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38683008).

27000090 is an abundant number, since it is smaller than the sum of its proper divisors (50365926).

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

27000090 is a wasteful number, since it uses less digits than its factorization.

27000090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 564 (or 561 counting only the distinct ones).

The product of its (nonzero) digits is 126, while the sum is 18.

The square root of 27000090 is about 5196.1610829535. The cubic root of 27000090 is about 300.0003333330. Note that the first 3 decimals are identical.

Subtracting from 27000090 its sum of digits (18), we obtain a palindrome (27000072).

It can be divided in two parts, 270000 and 90, that multiplied together give a 5-th power (24300000 = 30⁵).

The spelling of 27000090 in words is "twenty-seven million, ninety", and thus it is an aban number and an uban number.