22455450 has 72 divisors (see below), whose sum is σ = 60933600. Its totient is φ = 5928480.

The previous prime is 22455449. The next prime is 22455451. The reversal of 22455450 is 5455422.

It is an interprime number because it is at equal distance from previous prime (22455449) and next prime (22455451).

It is not an unprimeable number, because it can be changed into a prime (22455451) 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, 62371 + ... + 62729.

It is an arithmetic number, because the mean of its divisors is an integer number (846300).

Almost surely, 2^22455450 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22455450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30466800).

22455450 is an abundant number, since it is smaller than the sum of its proper divisors (38478150).

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

22455450 is a wasteful number, since it uses less digits than its factorization.

22455450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 516 (or 508 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 27.

The square root of 22455450 is about 4738.7181811118. The cubic root of 22455450 is about 282.1243604206.

The spelling of 22455450 in words is "twenty-two million, four hundred fifty-five thousand, four hundred fifty".