27043840 has 96 divisors (see below), whose sum is σ = 68796000. Its totient is φ = 10174464.

The previous prime is 27043823. The next prime is 27043843. The reversal of 27043840 is 4834072.

It is a junction number, because it is equal to n+sod(n) for n = 27043799 and 27043808.

It is not an unprimeable number, because it can be changed into a prime (27043843) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 194491 + ... + 194629.

It is an arithmetic number, because the mean of its divisors is an integer number (716625).

Almost surely, 2^27043840 is an apocalyptic number.

27043840 is a gapful number since it is divisible by the number (20) 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 27043840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34398000).

27043840 is an abundant number, since it is smaller than the sum of its proper divisors (41752160).

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

27043840 is a wasteful number, since it uses less digits than its factorization.

27043840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185 (or 165 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 28.

The square root of 27043840 is about 5200.3692176614. The cubic root of 27043840 is about 300.1622825691.

The spelling of 27043840 in words is "twenty-seven million, forty-three thousand, eight hundred forty".