22031450 has 48 divisors (see below), whose sum is σ = 49312320. Its totient is φ = 7153920.

The previous prime is 22031423. The next prime is 22031459. The reversal of 22031450 is 5413022.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22031459) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4994 + ... + 8306.

It is an arithmetic number, because the mean of its divisors is an integer number (1027340).

Almost surely, 2^22031450 is an apocalyptic number.

22031450 is an abundant number, since it is smaller than the sum of its proper divisors (27280870).

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

22031450 is a wasteful number, since it uses less digits than its factorization.

22031450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3351 (or 3346 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 22031450 is about 4693.7671437769. The cubic root of 22031450 is about 280.3373909107.

Adding to 22031450 its reverse (5413022), we get a palindrome (27444472).

The spelling of 22031450 in words is "twenty-two million, thirty-one thousand, four hundred fifty".