27421560 has 144 divisors (see below), whose sum is σ = 94503240. Its totient is φ = 6894720.

The previous prime is 27421553. The next prime is 27421571. The reversal of 27421560 is 6512472.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 129855 + ... + 130065.

Almost surely, 2^27421560 is an apocalyptic number.

27421560 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 27421560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47251620).

27421560 is an abundant number, since it is smaller than the sum of its proper divisors (67081680).

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

27421560 is a wasteful number, since it uses less digits than its factorization.

27421560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266 (or 240 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 27421560 is about 5236.5599395023. The cubic root of 27421560 is about 301.5532772198.

The spelling of 27421560 in words is "twenty-seven million, four hundred twenty-one thousand, five hundred sixty".