27822988 has 12 divisors (see below), whose sum is σ = 48867952. Its totient is φ = 13860720.

The previous prime is 27822961. The next prime is 27822989. The reversal of 27822988 is 88922872.

It is a super-2 number, since 2×27822988² = 1548237322496288, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (27822989) 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, 11448 + ... + 13663.

Almost surely, 2^27822988 is an apocalyptic number.

It is an amenable number.

27822988 is a deficient number, since it is larger than the sum of its proper divisors (21044964).

27822988 is a wasteful number, since it uses less digits than its factorization.

27822988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25392 (or 25390 counting only the distinct ones).

The product of its digits is 258048, while the sum is 46.

The square root of 27822988 is about 5274.7500414712. The cubic root of 27822988 is about 303.0176479317.

It can be divided in two parts, 2 and 7822988, that added together give a triangular number (7822990 = T₃₉₅₅).

The spelling of 27822988 in words is "twenty-seven million, eight hundred twenty-two thousand, nine hundred eighty-eight".