22150856 has 32 divisors (see below), whose sum is σ = 51119040. Its totient is φ = 8762688.

The previous prime is 22150853. The next prime is 22150861. The reversal of 22150856 is 65805122.

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22150853) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14486 + ... + 15941.

It is an arithmetic number, because the mean of its divisors is an integer number (1597470).

Almost surely, 2^22150856 is an apocalyptic number.

22150856 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

22150856 is an abundant number, since it is smaller than the sum of its proper divisors (28968184).

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

22150856 is a wasteful number, since it uses less digits than its factorization.

22150856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30453 (or 30449 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 29.

The square root of 22150856 is about 4706.4695898306. The cubic root of 22150856 is about 280.8429359972.

Adding to 22150856 its reverse (65805122), we get a palindrome (87955978).

The spelling of 22150856 in words is "twenty-two million, one hundred fifty thousand, eight hundred fifty-six".