22077198 has 80 divisors (see below), whose sum is σ = 58178736. Its totient is φ = 6168960.

The previous prime is 22077193. The next prime is 22077241. The reversal of 22077198 is 89177022.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22077193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 22690 + ... + 23642.

Almost surely, 2^22077198 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22077198, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29089368).

22077198 is an abundant number, since it is smaller than the sum of its proper divisors (36101538).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22077198 is a wasteful number, since it uses less digits than its factorization.

22077198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 991 (or 982 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 36.

The square root of 22077198 is about 4698.6378877287. The cubic root of 22077198 is about 280.5312956589.

The spelling of 22077198 in words is "twenty-two million, seventy-seven thousand, one hundred ninety-eight".