22100736 has 72 divisors (see below), whose sum is σ = 67239424. Its totient is φ = 6312960.

The previous prime is 22100713. The next prime is 22100761. The reversal of 22100736 is 63700122.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3321 + ... + 7431.

Almost surely, 2^22100736 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22100736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33619712).

22100736 is an abundant number, since it is smaller than the sum of its proper divisors (45138688).

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

22100736 is an equidigital number, since it uses as much as digits as its factorization.

22100736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4137 (or 4123 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 21.

The square root of 22100736 is about 4701.1419889214. The cubic root of 22100736 is about 280.6309580698.

Adding to 22100736 its reverse (63700122), we get a palindrome (85800858).

The spelling of 22100736 in words is "twenty-two million, one hundred thousand, seven hundred thirty-six".