27481480 has 64 divisors (see below), whose sum is σ = 68266800. Its totient is φ = 9891840.

The previous prime is 27481453. The next prime is 27481499. The reversal of 27481480 is 8418472.

It can be written as a sum of positive squares in 8 ways, for example, as 4268356 + 23213124 = 2066^2 + 4818^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20676 + ... + 21964.

Almost surely, 2^27481480 is an apocalyptic number.

27481480 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 27481480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34133400).

27481480 is an abundant number, since it is smaller than the sum of its proper divisors (40785320).

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

27481480 is a wasteful number, since it uses less digits than its factorization.

27481480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1354 (or 1350 counting only the distinct ones).

The product of its (nonzero) digits is 14336, while the sum is 34.

The square root of 27481480 is about 5242.2781307367. The cubic root of 27481480 is about 301.7727629962.

The spelling of 27481480 in words is "twenty-seven million, four hundred eighty-one thousand, four hundred eighty".