27913938 has 32 divisors (see below), whose sum is σ = 60673536. Its totient is φ = 8510208.

The previous prime is 27913937. The next prime is 27913967. The reversal of 27913938 is 83931972.

It is a self number, because there is not a number n which added to its sum of digits gives 27913938.

It is not an unprimeable number, because it can be changed into a prime (27913937) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7231 + ... + 10397.

It is an arithmetic number, because the mean of its divisors is an integer number (1896048).

Almost surely, 2^27913938 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 27913938, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30336768).

27913938 is an abundant number, since it is smaller than the sum of its proper divisors (32759598).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

27913938 is a wasteful number, since it uses less digits than its factorization.

27913938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3298.

The product of its digits is 81648, while the sum is 42.

The square root of 27913938 is about 5283.3642690998. The cubic root of 27913938 is about 303.3474648920.

The spelling of 27913938 in words is "twenty-seven million, nine hundred thirteen thousand, nine hundred thirty-eight".