27826812 has 72 divisors (see below), whose sum is σ = 77846496. Its totient is φ = 8325504.

The previous prime is 27826801. The next prime is 27826853. The reversal of 27826812 is 21862872.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

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 23 ways as a sum of consecutive naturals, for example, 16513 + ... + 18119.

Almost surely, 2^27826812 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 27826812, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38923248).

27826812 is an abundant number, since it is smaller than the sum of its proper divisors (50019684).

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

27826812 is a wasteful number, since it uses less digits than its factorization.

27826812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1667 (or 1662 counting only the distinct ones).

The product of its digits is 21504, while the sum is 36.

The square root of 27826812 is about 5275.1125106485. The cubic root of 27826812 is about 303.0315295752.

The spelling of 27826812 in words is "twenty-seven million, eight hundred twenty-six thousand, eight hundred twelve".