27021398 has 24 divisors (see below), whose sum is σ = 44399016. Its totient is φ = 12290880.

The previous prime is 27021391. The next prime is 27021431. The reversal of 27021398 is 89312072.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27021391) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 32261 + ... + 33087.

It is an arithmetic number, because the mean of its divisors is an integer number (1849959).

Almost surely, 2^27021398 is an apocalyptic number.

27021398 is a deficient number, since it is larger than the sum of its proper divisors (17377618).

27021398 is a wasteful number, since it uses less digits than its factorization.

27021398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 908 (or 877 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 27021398 is about 5198.2110384247. The cubic root of 27021398 is about 300.0792309249.

The spelling of 27021398 in words is "twenty-seven million, twenty-one thousand, three hundred ninety-eight".