27722028 has 48 divisors (see below), whose sum is σ = 68755680. Its totient is φ = 8676864.

The previous prime is 27722017. The next prime is 27722033. The reversal of 27722028 is 82022772.

It is a junction number, because it is equal to n+sod(n) for n = 27721986 and 27722004.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11800 + ... + 13952.

It is an arithmetic number, because the mean of its divisors is an integer number (1432410).

Almost surely, 2^27722028 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 27722028, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34377840).

27722028 is an abundant number, since it is smaller than the sum of its proper divisors (41033652).

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

27722028 is a wasteful number, since it uses less digits than its factorization.

27722028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2226 (or 2224 counting only the distinct ones).

The product of its (nonzero) digits is 6272, while the sum is 30.

The square root of 27722028 is about 5265.1712222871. The cubic root of 27722028 is about 302.6506883046.

The spelling of 27722028 in words is "twenty-seven million, seven hundred twenty-two thousand, twenty-eight".