22150918 has 4 divisors (see below), whose sum is σ = 33226380. Its totient is φ = 11075458.

The previous prime is 22150883. The next prime is 22150927. The reversal of 22150918 is 81905122.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5537728 + ... + 5537731.

It is an arithmetic number, because the mean of its divisors is an integer number (8306595).

Almost surely, 2^22150918 is an apocalyptic number.

22150918 is a deficient number, since it is larger than the sum of its proper divisors (11075462).

22150918 is a wasteful number, since it uses less digits than its factorization.

22150918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11075461.

The product of its (nonzero) digits is 1440, while the sum is 28.

The square root of 22150918 is about 4706.4761765040. The cubic root of 22150918 is about 280.8431980224.

The spelling of 22150918 in words is "twenty-two million, one hundred fifty thousand, nine hundred eighteen".