27286560 has 144 divisors (see below), whose sum is σ = 106456896. Its totient is φ = 6234624.

The previous prime is 27286559. The next prime is 27286561. The reversal of 27286560 is 6568272.

It is an interprime number because it is at equal distance from previous prime (27286559) and next prime (27286561).

It is a tau number, because it is divible by the number of its divisors (144).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27286561) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8727 + ... + 11433.

It is an arithmetic number, because the mean of its divisors is an integer number (739284).

Almost surely, 2^27286560 is an apocalyptic number.

27286560 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 27286560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (53228448).

27286560 is an abundant number, since it is smaller than the sum of its proper divisors (79170336).

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

27286560 is a wasteful number, since it uses less digits than its factorization.

27286560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2735 (or 2724 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The square root of 27286560 is about 5223.6538935883. The cubic root of 27286560 is about 301.0576005556.

The spelling of 27286560 in words is "twenty-seven million, two hundred eighty-six thousand, five hundred sixty".