22798019 has 4 divisors (see below), whose sum is σ = 22883040. Its totient is φ = 22713000.

The previous prime is 22797979. The next prime is 22798049. The reversal of 22798019 is 91089722.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22798019 is a prime.

It is a super-2 number, since 2×22798019² = 1039499340648722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22798049) 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, 42107 + ... + 42644.

It is an arithmetic number, because the mean of its divisors is an integer number (5720760).

Almost surely, 2^22798019 is an apocalyptic number.

22798019 is a deficient number, since it is larger than the sum of its proper divisors (85021).

22798019 is an equidigital number, since it uses as much as digits as its factorization.

22798019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85020.

The product of its (nonzero) digits is 18144, while the sum is 38.

The square root of 22798019 is about 4774.7271126212. The cubic root of 22798019 is about 283.5517751046.

The spelling of 22798019 in words is "twenty-two million, seven hundred ninety-eight thousand, nineteen".