27800480 has 48 divisors (see below), whose sum is σ = 66044160. Its totient is φ = 11058432.

The previous prime is 27800471. The next prime is 27800503. The reversal of 27800480 is 8400872.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37877 + ... + 38603.

It is an arithmetic number, because the mean of its divisors is an integer number (1375920).

Almost surely, 2^27800480 is an apocalyptic number.

27800480 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 27800480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33022080).

27800480 is an abundant number, since it is smaller than the sum of its proper divisors (38243680).

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

27800480 is a wasteful number, since it uses less digits than its factorization.

27800480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 981 (or 973 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 29.

The square root of 27800480 is about 5272.6160489837. The cubic root of 27800480 is about 302.9359150232.

The spelling of 27800480 in words is "twenty-seven million, eight hundred thousand, four hundred eighty".