27097890 has 32 divisors (see below), whose sum is σ = 67279680. Its totient is φ = 6976704.

The previous prime is 27097883. The next prime is 27097891. The reversal of 27097890 is 9879072.

It is not an unprimeable number, because it can be changed into a prime (27097891) 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, 14704 + ... + 16443.

It is an arithmetic number, because the mean of its divisors is an integer number (2102490).

Almost surely, 2^27097890 is an apocalyptic number.

27097890 is an abundant number, since it is smaller than the sum of its proper divisors (40181790).

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

27097890 is a wasteful number, since it uses less digits than its factorization.

27097890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31186.

The product of its (nonzero) digits is 63504, while the sum is 42.

The square root of 27097890 is about 5205.5633700878. The cubic root of 27097890 is about 300.3621182809.

The spelling of 27097890 in words is "twenty-seven million, ninety-seven thousand, eight hundred ninety".