27222861 has 8 divisors (see below), whose sum is σ = 37278304. Its totient is φ = 17658000.

The previous prime is 27222821. The next prime is 27222883. The reversal of 27222861 is 16822272.

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

It is not a de Polignac number, because 27222861 - 2¹⁰ = 27221837 is a prime.

It is a super-2 number, since 2×27222861² = 1482168322050642, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27222821) 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, 122515 + ... + 122736.

It is an arithmetic number, because the mean of its divisors is an integer number (4659788).

Almost surely, 2^27222861 is an apocalyptic number.

It is an amenable number.

27222861 is a deficient number, since it is larger than the sum of its proper divisors (10055443).

27222861 is a wasteful number, since it uses less digits than its factorization.

27222861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245291.

The product of its digits is 5376, while the sum is 30.

The square root of 27222861 is about 5217.5531621633. The cubic root of 27222861 is about 300.8231504565.

The spelling of 27222861 in words is "twenty-seven million, two hundred twenty-two thousand, eight hundred sixty-one".