22003606400 has 96 divisors (see below), whose sum is σ = 54407711880. Its totient is φ = 8793036800.

The previous prime is 22003606357. The next prime is 22003606451. The reversal of 22003606400 is 460630022.

It is a super-2 number, since 2×22003606400² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4179770 + ... + 4185030.

Almost surely, 2^22003606400 is an apocalyptic number.

22003606400 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 22003606400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27203855940).

22003606400 is an abundant number, since it is smaller than the sum of its proper divisors (32404105480).

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

22003606400 is a wasteful number, since it uses less digits than its factorization.

22003606400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6592 (or 6575 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 23.

The spelling of 22003606400 in words is "twenty-two billion, three million, six hundred six thousand, four hundred".