27798872 has 8 divisors (see below), whose sum is σ = 52122900. Its totient is φ = 13899432.

The previous prime is 27798829. The next prime is 27798887. The reversal of 27798872 is 27889772.

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 27798872.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 1737422 + ... + 1737437.

Almost surely, 2^27798872 is an apocalyptic number.

It is an amenable number.

27798872 is a deficient number, since it is larger than the sum of its proper divisors (24324028).

27798872 is a wasteful number, since it uses less digits than its factorization.

27798872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3474865 (or 3474861 counting only the distinct ones).

The product of its digits is 790272, while the sum is 50.

The square root of 27798872 is about 5272.4635608034. The cubic root of 27798872 is about 302.9300742327.

The spelling of 27798872 in words is "twenty-seven million, seven hundred ninety-eight thousand, eight hundred seventy-two".