27421438 has 8 divisors (see below), whose sum is σ = 44871480. Its totient is φ = 12464280.

The previous prime is 27421423. The next prime is 27421439. The reversal of 27421438 is 83412472.

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 (27421439) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 623193 + ... + 623236.

It is an arithmetic number, because the mean of its divisors is an integer number (5608935).

Almost surely, 2^27421438 is an apocalyptic number.

27421438 is a deficient number, since it is larger than the sum of its proper divisors (17450042).

27421438 is a wasteful number, since it uses less digits than its factorization.

27421438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1246442.

The product of its digits is 10752, while the sum is 31.

The square root of 27421438 is about 5236.5482906205. The cubic root of 27421438 is about 301.5528300102.

It can be divided in two parts, 274 and 21438, that added together give a palindrome (21712).

The spelling of 27421438 in words is "twenty-seven million, four hundred twenty-one thousand, four hundred thirty-eight".