22145329 has 4 divisors (see below), whose sum is σ = 22224420. Its totient is φ = 22066240.

The previous prime is 22145327. The next prime is 22145363. The reversal of 22145329 is 92354122.

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

It can be written as a sum of positive squares in 2 ways, for example, as 4906225 + 17239104 = 2215^2 + 4152^2 .

It is a cyclic number.

It is not a de Polignac number, because 22145329 - 2¹ = 22145327 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22145297 and 22145306.

It is not an unprimeable number, because it can be changed into a prime (22145323) 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, 39124 + ... + 39685.

It is an arithmetic number, because the mean of its divisors is an integer number (5556105).

Almost surely, 2^22145329 is an apocalyptic number.

It is an amenable number.

22145329 is a deficient number, since it is larger than the sum of its proper divisors (79091).

22145329 is an equidigital number, since it uses as much as digits as its factorization.

22145329 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79090.

The product of its digits is 4320, while the sum is 28.

The square root of 22145329 is about 4705.8823827206. The cubic root of 22145329 is about 280.8195757558.

The spelling of 22145329 in words is "twenty-two million, one hundred forty-five thousand, three hundred twenty-nine".