22136994 has 48 divisors (see below), whose sum is σ = 54609984. Its totient is φ = 6415200.

The previous prime is 22136981. The next prime is 22137023. The reversal of 22136994 is 49963122.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2124 + ... + 6984.

It is an arithmetic number, because the mean of its divisors is an integer number (1137708).

Almost surely, 2^22136994 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22136994, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27304992).

22136994 is an abundant number, since it is smaller than the sum of its proper divisors (32472990).

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

22136994 is a wasteful number, since it uses less digits than its factorization.

22136994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4903 (or 4900 counting only the distinct ones).

The product of its digits is 23328, while the sum is 36.

The square root of 22136994 is about 4704.9967056312. The cubic root of 22136994 is about 280.7843399599.

The spelling of 22136994 in words is "twenty-two million, one hundred thirty-six thousand, nine hundred ninety-four".