22427271 has 12 divisors (see below), whose sum is σ = 32504472. Its totient is φ = 14900976.

The previous prime is 22427243. The next prime is 22427281. The reversal of 22427271 is 17272422.

It is not a de Polignac number, because 22427271 - 2⁹ = 22426759 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22427221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1296 + ... + 6821.

It is an arithmetic number, because the mean of its divisors is an integer number (2708706).

Almost surely, 2^22427271 is an apocalyptic number.

22427271 is a deficient number, since it is larger than the sum of its proper divisors (10077201).

22427271 is a wasteful number, since it uses less digits than its factorization.

22427271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8430 (or 8427 counting only the distinct ones).

The product of its digits is 3136, while the sum is 27.

The square root of 22427271 is about 4735.7439753433. The cubic root of 22427271 is about 282.0062998442.

Adding to 22427271 its reverse (17272422), we get a palindrome (39699693).

It can be divided in two parts, 224 and 27271, that added together give a triangular number (27495 = T₂₃₄).

The spelling of 22427271 in words is "twenty-two million, four hundred twenty-seven thousand, two hundred seventy-one".