27298890 has 32 divisors (see below), whose sum is σ = 72797760. Its totient is φ = 7279632.

The previous prime is 27298849. The next prime is 27298891. The reversal of 27298890 is 9889272.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (27298891) 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, 50284 + ... + 50823.

It is an arithmetic number, because the mean of its divisors is an integer number (2274930).

Almost surely, 2^27298890 is an apocalyptic number.

27298890 is an abundant number, since it is smaller than the sum of its proper divisors (45498870).

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

27298890 is a wasteful number, since it uses less digits than its factorization.

27298890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101123 (or 101117 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 45.

The square root of 27298890 is about 5224.8339686539. The cubic root of 27298890 is about 301.1029401078.

The spelling of 27298890 in words is "twenty-seven million, two hundred ninety-eight thousand, eight hundred ninety".