22506750 has 96 divisors (see below), whose sum is σ = 69600960. Its totient is φ = 5140800.

The previous prime is 22506733. The next prime is 22506761. The reversal of 22506750 is 5760522.

22506750 is a modest number, since divided by 6750 gives 2250 as remainder.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 15036 + ... + 16464.

It is an arithmetic number, because the mean of its divisors is an integer number (725010).

Almost surely, 2^22506750 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22506750, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34800480).

22506750 is an abundant number, since it is smaller than the sum of its proper divisors (47094210).

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

22506750 is a wasteful number, since it uses less digits than its factorization.

22506750 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1459 (or 1446 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 27.

The square root of 22506750 is about 4744.1279493707. The cubic root of 22506750 is about 282.3390369225.

The spelling of 22506750 in words is "twenty-two million, five hundred six thousand, seven hundred fifty".