22505450 has 96 divisors (see below), whose sum is σ = 50621760. Its totient is φ = 7347200.

The previous prime is 22505447. The next prime is 22505453. The reversal of 22505450 is 5450522.

It is an interprime number because it is at equal distance from previous prime (22505447) and next prime (22505453).

It is not an unprimeable number, because it can be changed into a prime (22505453) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 271109 + ... + 271191.

It is an arithmetic number, because the mean of its divisors is an integer number (527310).

Almost surely, 2^22505450 is an apocalyptic number.

22505450 is an abundant number, since it is smaller than the sum of its proper divisors (28116310).

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

22505450 is a wasteful number, since it uses less digits than its factorization.

22505450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152 (or 147 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 23.

The square root of 22505450 is about 4743.9909359104. The cubic root of 22505450 is about 282.3336008080. Note that the first 3 decimals are identical.

Adding to 22505450 its reverse (5450522), we get a palindrome (27955972).

It can be divided in two parts, 22505 and 450, that multiplied together give a triangular number (10127250 = T₄₅₀₀).

The spelling of 22505450 in words is "twenty-two million, five hundred five thousand, four hundred fifty".