27421390 has 8 divisors (see below), whose sum is σ = 49358520. Its totient is φ = 10968552.

The previous prime is 27421379. The next prime is 27421397. The reversal of 27421390 is 9312472.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27421397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1371060 + ... + 1371079.

It is an arithmetic number, because the mean of its divisors is an integer number (6169815).

Almost surely, 2^27421390 is an apocalyptic number.

27421390 is a deficient number, since it is larger than the sum of its proper divisors (21937130).

27421390 is a wasteful number, since it uses less digits than its factorization.

27421390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2742146.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 27421390 is about 5236.5437074467. The cubic root of 27421390 is about 301.5526540585.

The spelling of 27421390 in words is "twenty-seven million, four hundred twenty-one thousand, three hundred ninety".