27868428 has 96 divisors (see below), whose sum is σ = 83435520. Its totient is φ = 7879680.

The previous prime is 27868427. The next prime is 27868439. The reversal of 27868428 is 82486872.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (27868427) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 144300 + ... + 144492.

It is an arithmetic number, because the mean of its divisors is an integer number (869120).

Almost surely, 2^27868428 is an apocalyptic number.

27868428 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 27868428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41717760).

27868428 is an abundant number, since it is smaller than the sum of its proper divisors (55567092).

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

27868428 is a wasteful number, since it uses less digits than its factorization.

27868428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 404 (or 396 counting only the distinct ones).

The product of its digits is 344064, while the sum is 45.

The square root of 27868428 is about 5279.0555973583. The cubic root of 27868428 is about 303.1825191872.

The spelling of 27868428 in words is "twenty-seven million, eight hundred sixty-eight thousand, four hundred twenty-eight".