27696021 has 8 divisors (see below), whose sum is σ = 37373280. Its totient is φ = 18241392.

The previous prime is 27696001. The next prime is 27696023. The reversal of 27696021 is 12069672.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 27696021 - 2¹¹ = 27693973 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27696023) 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, 55366 + ... + 55863.

It is an arithmetic number, because the mean of its divisors is an integer number (4671660).

Almost surely, 2^27696021 is an apocalyptic number.

It is an amenable number.

27696021 is a deficient number, since it is larger than the sum of its proper divisors (9677259).

27696021 is a wasteful number, since it uses less digits than its factorization.

27696021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111315.

The product of its (nonzero) digits is 9072, while the sum is 33.

The square root of 27696021 is about 5262.7009225302. The cubic root of 27696021 is about 302.5560163094.

The spelling of 27696021 in words is "twenty-seven million, six hundred ninety-six thousand, twenty-one".