27628438 has 8 divisors (see below), whose sum is σ = 41486760. Its totient is φ = 13799520.

The previous prime is 27628429. The next prime is 27628439. The reversal of 27628438 is 83482672.

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 27628438.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27628439) by changing a digit.

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

It is an upside-down number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4828 + ... + 8863.

It is an arithmetic number, because the mean of its divisors is an integer number (5185845).

Almost surely, 2^27628438 is an apocalyptic number.

27628438 is a deficient number, since it is larger than the sum of its proper divisors (13858322).

27628438 is a wasteful number, since it uses less digits than its factorization.

27628438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14702.

The product of its digits is 129024, while the sum is 40.

The square root of 27628438 is about 5256.2760581994. The cubic root of 27628438 is about 302.3097198259.

The spelling of 27628438 in words is "twenty-seven million, six hundred twenty-eight thousand, four hundred thirty-eight".