27938530 has 8 divisors (see below), whose sum is σ = 50289372. Its totient is φ = 11175408.

The previous prime is 27938527. The next prime is 27938567. The reversal of 27938530 is 3583972.

It can be written as a sum of positive squares in 2 ways, for example, as 27237961 + 700569 = 5219^2 + 837^2 .

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

It is a super-2 number, since 2×27938530² = 1561122917121800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 27938530.

It is an unprimeable number.

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, 1396917 + ... + 1396936.

Almost surely, 2^27938530 is an apocalyptic number.

27938530 is a deficient number, since it is larger than the sum of its proper divisors (22350842).

27938530 is a wasteful number, since it uses less digits than its factorization.

27938530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2793860.

The product of its (nonzero) digits is 45360, while the sum is 37.

The square root of 27938530 is about 5285.6910617250. The cubic root of 27938530 is about 303.4365211335.

It can be divided in two parts, 279 and 38530, that added together give a square (38809 = 197²).

The spelling of 27938530 in words is "twenty-seven million, nine hundred thirty-eight thousand, five hundred thirty".