22289250 has 64 divisors (see below), whose sum is σ = 56339712. Its totient is φ = 5868800.

The previous prime is 22289237. The next prime is 22289263. The reversal of 22289250 is 5298222.

It is an interprime number because it is at equal distance from previous prime (22289237) and next prime (22289263).

It is a Harshad number since it is a multiple of its sum of digits (30).

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 31 ways as a sum of consecutive naturals, for example, 84619 + ... + 84881.

It is an arithmetic number, because the mean of its divisors is an integer number (880308).

Almost surely, 2^22289250 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22289250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28169856).

22289250 is an abundant number, since it is smaller than the sum of its proper divisors (34050462).

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

22289250 is a wasteful number, since it uses less digits than its factorization.

22289250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 396 (or 386 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 22289250 is about 4721.1492245003. The cubic root of 22289250 is about 281.4266051306.

The spelling of 22289250 in words is "twenty-two million, two hundred eighty-nine thousand, two hundred fifty".