22001726450 has 54 divisors (see below), whose sum is σ = 45005311533. Its totient is φ = 7996432400.

The previous prime is 22001726431. The next prime is 22001726477. The reversal of 22001726450 is 5462710022.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 21561691921 + 440034529 = 146839^2 + 20977^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=104885.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 11536397 + ... + 11538303.

Almost surely, 2^22001726450 is an apocalyptic number.

22001726450 is an abundant number, since it is smaller than the sum of its proper divisors (23003585083).

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

22001726450 is an equidigital number, since it uses as much as digits as its factorization.

22001726450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3848 (or 1925 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 29.

The spelling of 22001726450 in words is "twenty-two billion, one million, seven hundred twenty-six thousand, four hundred fifty".