27798384 has 20 divisors (see below), whose sum is σ = 71812616. Its totient is φ = 9266112.

The previous prime is 27798377. The next prime is 27798389. The reversal of 27798384 is 48389772.

It is a super-2 number, since 2×27798384² = 1545500306022912, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48), and also a Moran number because the ratio is a prime number: 579133 = 27798384 / (2 + 7 + 7 + 9 + 8 + 3 + 8 + 4).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27798389) 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, 289519 + ... + 289614.

Almost surely, 2^27798384 is an apocalyptic number.

27798384 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

27798384 is an abundant number, since it is smaller than the sum of its proper divisors (44014232).

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

27798384 is a wasteful number, since it uses less digits than its factorization.

27798384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 579144 (or 579138 counting only the distinct ones).

The product of its digits is 677376, while the sum is 48.

The square root of 27798384 is about 5272.4172824237. The cubic root of 27798384 is about 302.9283016099.

It can be divided in two parts, 27798 and 384, that added together give a palindrome (28182).

The spelling of 27798384 in words is "twenty-seven million, seven hundred ninety-eight thousand, three hundred eighty-four".