22985550 has 72 divisors (see below), whose sum is σ = 70586256. Its totient is φ = 5253120.

The previous prime is 22985549. The next prime is 22985551. The reversal of 22985550 is 5558922.

22985550 is a `hidden beast` number, since 2 + 29 + 85 + 550 = 666.

It is an interprime number because it is at equal distance from previous prime (22985549) and next prime (22985551).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22985551) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 499 + ... + 6798.

Almost surely, 2^22985550 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22985550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35293128).

22985550 is an abundant number, since it is smaller than the sum of its proper divisors (47600706).

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

22985550 is a wasteful number, since it uses less digits than its factorization.

22985550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7322 (or 7314 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 36.

The square root of 22985550 is about 4794.3247699754. The cubic root of 22985550 is about 284.3271291638.

The spelling of 22985550 in words is "twenty-two million, nine hundred eighty-five thousand, five hundred fifty".