27788488 has 128 divisors (see below), whose sum is σ = 70560000. Its totient is φ = 10160640.

The previous prime is 27788479. The next prime is 27788491. The reversal of 27788488 is 88488772.

It is a super-2 number, since 2×27788488² = 1544400130652288, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (52).

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 677748 + ... + 677788.

It is an arithmetic number, because the mean of its divisors is an integer number (551250).

Almost surely, 2^27788488 is an apocalyptic number.

27788488 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 27788488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35280000).

27788488 is an abundant number, since it is smaller than the sum of its proper divisors (42771512).

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

27788488 is a wasteful number, since it uses less digits than its factorization.

27788488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100 (or 82 counting only the distinct ones).

The product of its digits is 1605632, while the sum is 52.

The square root of 27788488 is about 5271.4787299201. The cubic root of 27788488 is about 302.8923506679.

The spelling of 27788488 in words is "twenty-seven million, seven hundred eighty-eight thousand, four hundred eighty-eight".