22187150 has 48 divisors (see below), whose sum is σ = 43122240. Its totient is φ = 8486400.

The previous prime is 22187131. The next prime is 22187167. The reversal of 22187150 is 5178122.

It is a plaindrome in base 13.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 161882 + ... + 162018.

It is an arithmetic number, because the mean of its divisors is an integer number (898380).

Almost surely, 2^22187150 is an apocalyptic number.

22187150 is a deficient number, since it is larger than the sum of its proper divisors (20935090).

22187150 is a wasteful number, since it uses less digits than its factorization.

22187150 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 269 (or 264 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 26.

The square root of 22187150 is about 4710.3237680652. The cubic root of 22187150 is about 280.9962385991.

Subtracting from 22187150 its reverse (5178122), we obtain a triangular number (17009028 = T₅₈₃₂).

The spelling of 22187150 in words is "twenty-two million, one hundred eighty-seven thousand, one hundred fifty".