22273732800 has 252 divisors, whose sum is σ = 86363638296. Its totient is φ = 5399654400.

The previous prime is 22273732781. The next prime is 22273732801. The reversal of 22273732800 is 823737222.

22273732800 is a `hidden beast` number, since 2 + 2 + 2 + 7 + 373 + 280 + 0 = 666.

It is a super-2 number, since 2×22273732800² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (22273732801) 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, 88092 + ... + 228708.

Almost surely, 2^22273732800 is an apocalyptic number.

22273732800 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 22273732800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43181819148).

22273732800 is an abundant number, since it is smaller than the sum of its proper divisors (64089905496).

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

22273732800 is a wasteful number, since it uses less digits than its factorization.

22273732800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140656 (or 140638 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 36.

The spelling of 22273732800 in words is "twenty-two billion, two hundred seventy-three million, seven hundred thirty-two thousand, eight hundred".