22434500 has 48 divisors (see below), whose sum is σ = 53464320. Its totient is φ = 8156000.

The previous prime is 22434491. The next prime is 22434521. The reversal of 22434500 is 543422.

It is a Harshad number since it is a multiple of its sum of digits (20).

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 15 ways as a sum of consecutive naturals, for example, 3461 + ... + 7539.

It is an arithmetic number, because the mean of its divisors is an integer number (1113840).

Almost surely, 2^22434500 is an apocalyptic number.

22434500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22434500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26732160).

22434500 is an abundant number, since it is smaller than the sum of its proper divisors (31029820).

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

22434500 is a wasteful number, since it uses less digits than its factorization.

22434500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4109 (or 4097 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 20.

The square root of 22434500 is about 4736.5071519000. The cubic root of 22434500 is about 282.0365963605.

Adding to 22434500 its reverse (543422), we get a palindrome (22977922).

The spelling of 22434500 in words is "twenty-two million, four hundred thirty-four thousand, five hundred".