27680226 has 32 divisors (see below), whose sum is σ = 66600960. Its totient is φ = 7492176.

The previous prime is 27680221. The next prime is 27680231. The reversal of 27680226 is 62208672.

It is an interprime number because it is at equal distance from previous prime (27680221) and next prime (27680231).

It is a super-2 number, since 2×27680226² = 1532389822822152, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (27680221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16546 + ... + 18141.

It is an arithmetic number, because the mean of its divisors is an integer number (2081280).

Almost surely, 2^27680226 is an apocalyptic number.

27680226 is an abundant number, since it is smaller than the sum of its proper divisors (38920734).

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

27680226 is a wasteful number, since it uses less digits than its factorization.

27680226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34718.

The product of its (nonzero) digits is 16128, while the sum is 33.

The square root of 27680226 is about 5261.2000532198. The cubic root of 27680226 is about 302.4984896220.

Adding to 27680226 its reverse (62208672), we get a palindrome (89888898).

The spelling of 27680226 in words is "twenty-seven million, six hundred eighty thousand, two hundred twenty-six".