27870120 has 48 divisors (see below), whose sum is σ = 90579060. Its totient is φ = 7431936.

The previous prime is 27870113. The next prime is 27870133. The reversal of 27870120 is 2107872.

It can be written as a sum of positive squares in 2 ways, for example, as 27688644 + 181476 = 5262^2 + 426^2 .

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 11 ways as a sum of consecutive naturals, for example, 38349 + ... + 39068.

Almost surely, 2^27870120 is an apocalyptic number.

27870120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27870120 is an abundant number, since it is smaller than the sum of its proper divisors (62708940).

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

27870120 is a wasteful number, since it uses less digits than its factorization.

27870120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77434 (or 77427 counting only the distinct ones).

The product of its (nonzero) digits is 1568, while the sum is 27.

The square root of 27870120 is about 5279.2158508627. The cubic root of 27870120 is about 303.1886548573.

Adding to 27870120 its reverse (2107872), we get a palindrome (29977992).

The spelling of 27870120 in words is "twenty-seven million, eight hundred seventy thousand, one hundred twenty".