22427971 has 4 divisors (see below), whose sum is σ = 22444000. Its totient is φ = 22411944.

The previous prime is 22427969. The next prime is 22427987. The reversal of 22427971 is 17972422.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 22427971 - 2¹ = 22427969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22422971) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5691 + ... + 8788.

It is an arithmetic number, because the mean of its divisors is an integer number (5611000).

Almost surely, 2^22427971 is an apocalyptic number.

22427971 is a deficient number, since it is larger than the sum of its proper divisors (16029).

22427971 is a wasteful number, since it uses less digits than its factorization.

22427971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16028.

The product of its digits is 14112, while the sum is 34.

The square root of 22427971 is about 4735.8178807889. The cubic root of 22427971 is about 282.0092338073.

The spelling of 22427971 in words is "twenty-two million, four hundred twenty-seven thousand, nine hundred seventy-one".