22198449 has 64 divisors (see below), whose sum is σ = 39108608. Its totient is φ = 10886400.

The previous prime is 22198411. The next prime is 22198453. The reversal of 22198449 is 94489122.

It is not a de Polignac number, because 22198449 - 2⁷ = 22198321 is a prime.

It is a super-2 number, since 2×22198449² = 985542276011202, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (22198459) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 363879 + ... + 363939.

It is an arithmetic number, because the mean of its divisors is an integer number (611072).

Almost surely, 2^22198449 is an apocalyptic number.

It is an amenable number.

22198449 is a deficient number, since it is larger than the sum of its proper divisors (16910159).

22198449 is a wasteful number, since it uses less digits than its factorization.

22198449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158.

The product of its digits is 41472, while the sum is 39.

The square root of 22198449 is about 4711.5230021724. The cubic root of 22198449 is about 281.0439304341.

The spelling of 22198449 in words is "twenty-two million, one hundred ninety-eight thousand, four hundred forty-nine".