22129347 has 4 divisors (see below), whose sum is σ = 29505800. Its totient is φ = 14752896.

The previous prime is 22129333. The next prime is 22129361. The reversal of 22129347 is 74392122.

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

It is an interprime number because it is at equal distance from previous prime (22129333) and next prime (22129361).

It is not a de Polignac number, because 22129347 - 2¹¹ = 22127299 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22121347) 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, 3688222 + ... + 3688227.

It is an arithmetic number, because the mean of its divisors is an integer number (7376450).

Almost surely, 2^22129347 is an apocalyptic number.

22129347 is a deficient number, since it is larger than the sum of its proper divisors (7376453).

22129347 is an equidigital number, since it uses as much as digits as its factorization.

22129347 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7376452.

The product of its digits is 6048, while the sum is 30.

The square root of 22129347 is about 4704.1839887487. The cubic root of 22129347 is about 280.7520048691.

The spelling of 22129347 in words is "twenty-two million, one hundred twenty-nine thousand, three hundred forty-seven".