22500450 has 96 divisors (see below), whose sum is σ = 70888320. Its totient is φ = 5140800.

The previous prime is 22500449. The next prime is 22500493. The reversal of 22500450 is 5400522.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 8260 + ... + 10640.

It is an arithmetic number, because the mean of its divisors is an integer number (738420).

Almost surely, 2^22500450 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22500450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35444160).

22500450 is an abundant number, since it is smaller than the sum of its proper divisors (48387870).

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

22500450 is a wasteful number, since it uses less digits than its factorization.

22500450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2409 (or 2398 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 18.

The square root of 22500450 is about 4743.4639241803. The cubic root of 22500450 is about 282.3126907238.

Adding to 22500450 its reverse (5400522), we get a palindrome (27900972).

The spelling of 22500450 in words is "twenty-two million, five hundred thousand, four hundred fifty".