27021916 has 24 divisors (see below), whose sum is σ = 48109824. Its totient is φ = 13278720.

The previous prime is 27021901. The next prime is 27021919. The reversal of 27021916 is 61912072.

It is a happy number.

It is a super-2 number, since 2×27021916² = 1460367888622112, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27021919) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 86176 + ... + 86488.

It is an arithmetic number, because the mean of its divisors is an integer number (2004576).

Almost surely, 2^27021916 is an apocalyptic number.

It is an amenable number.

27021916 is a deficient number, since it is larger than the sum of its proper divisors (21087908).

27021916 is a wasteful number, since it uses less digits than its factorization.

27021916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 621 (or 619 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 28.

The square root of 27021916 is about 5198.2608630195. The cubic root of 27021916 is about 300.0811484182.

Adding to 27021916 its reverse (61912072), we get a palindrome (88933988).

The spelling of 27021916 in words is "twenty-seven million, twenty-one thousand, nine hundred sixteen".