27804040 has 64 divisors (see below), whose sum is σ = 70632000. Its totient is φ = 9757440.

The previous prime is 27804019. The next prime is 27804067. The reversal of 27804040 is 4040872.

It is a junction number, because it is equal to n+sod(n) for n = 27803996 and 27804014.

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, 11671 + ... + 13849.

It is an arithmetic number, because the mean of its divisors is an integer number (1103625).

Almost surely, 2^27804040 is an apocalyptic number.

27804040 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 27804040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35316000).

27804040 is an abundant number, since it is smaller than the sum of its proper divisors (42827960).

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

27804040 is a wasteful number, since it uses less digits than its factorization.

27804040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2230 (or 2226 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 25.

The square root of 27804040 is about 5272.9536315048. The cubic root of 27804040 is about 302.9488453255.

The spelling of 27804040 in words is "twenty-seven million, eight hundred four thousand, forty".