27483781 has 16 divisors (see below), whose sum is σ = 32707584. Its totient is φ = 22834944.

The previous prime is 27483773. The next prime is 27483803. The reversal of 27483781 is 18738472.

It is not a de Polignac number, because 27483781 - 2³ = 27483773 is a prime.

It is a super-2 number, since 2×27483781² = 1510716436111922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27483721) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 2380 + ... + 7786.

It is an arithmetic number, because the mean of its divisors is an integer number (2044224).

Almost surely, 2^27483781 is an apocalyptic number.

It is an amenable number.

27483781 is a deficient number, since it is larger than the sum of its proper divisors (5223803).

27483781 is a wasteful number, since it uses less digits than its factorization.

27483781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5460.

The product of its digits is 75264, while the sum is 40.

The square root of 27483781 is about 5242.4975917973. The cubic root of 27483781 is about 301.7811851500.

The spelling of 27483781 in words is "twenty-seven million, four hundred eighty-three thousand, seven hundred eighty-one".