27321616 has 30 divisors (see below), whose sum is σ = 61579950. Its totient is φ = 11708928.

The previous prime is 27321583. The next prime is 27321629. The reversal of 27321616 is 61612372.

It can be written as a sum of positive squares in only one way, i.e., 16032016 + 11289600 = 4004^2 + 3360^2 .

It is a Harshad number since it is a multiple of its sum of digits (28).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 16641 + ... + 18208.

It is an arithmetic number, because the mean of its divisors is an integer number (2052665).

Almost surely, 2^27321616 is an apocalyptic number.

It is an amenable number.

27321616 is an abundant number, since it is smaller than the sum of its proper divisors (34258334).

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

27321616 is a wasteful number, since it uses less digits than its factorization.

27321616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34871 (or 34858 counting only the distinct ones).

The product of its digits is 3024, while the sum is 28.

The square root of 27321616 is about 5227.0083221667. The cubic root of 27321616 is about 301.1864718000.

Adding to 27321616 its reverse (61612372), we get a palindrome (88933988).

The spelling of 27321616 in words is "twenty-seven million, three hundred twenty-one thousand, six hundred sixteen".