22098643 has 4 divisors (see below), whose sum is σ = 25255600. Its totient is φ = 18941688.

The previous prime is 22098641. The next prime is 22098647. The reversal of 22098643 is 34689022.

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 22098643 - 2¹ = 22098641 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22098599 and 22098608.

It is not an unprimeable number, because it can be changed into a prime (22098641) 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, 1578468 + ... + 1578481.

It is an arithmetic number, because the mean of its divisors is an integer number (6313900).

Almost surely, 2^22098643 is an apocalyptic number.

22098643 is a deficient number, since it is larger than the sum of its proper divisors (3156957).

22098643 is an equidigital number, since it uses as much as digits as its factorization.

22098643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3156956.

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 22098643 is about 4700.9193781642. The cubic root of 22098643 is about 280.6220989510.

The spelling of 22098643 in words is "twenty-two million, ninety-eight thousand, six hundred forty-three".