27398642 has 8 divisors (see below), whose sum is σ = 41250432. Its totient is φ = 13648500.

The previous prime is 27398633. The next prime is 27398647. The reversal of 27398642 is 24689372.

It is a happy number.

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

It is a self number, because there is not a number n which added to its sum of digits gives 27398642.

It is not an unprimeable number, because it can be changed into a prime (27398647) 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 3 ways as a sum of consecutive naturals, for example, 24734 + ... + 25817.

It is an arithmetic number, because the mean of its divisors is an integer number (5156304).

Almost surely, 2^27398642 is an apocalyptic number.

27398642 is a deficient number, since it is larger than the sum of its proper divisors (13851790).

27398642 is a wasteful number, since it uses less digits than its factorization.

27398642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50824.

The product of its digits is 145152, while the sum is 41.

The square root of 27398642 is about 5234.3712134315. The cubic root of 27398642 is about 301.4692445070.

The spelling of 27398642 in words is "twenty-seven million, three hundred ninety-eight thousand, six hundred forty-two".