22700100 has 72 divisors (see below), whose sum is σ = 69558048. Its totient is φ = 5696000.

The previous prime is 22700099. The next prime is 22700123. The reversal of 22700100 is 100722.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2875 + ... + 7325.

It is an arithmetic number, because the mean of its divisors is an integer number (966084).

Almost surely, 2^22700100 is an apocalyptic number.

22700100 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 22700100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34779024).

22700100 is an abundant number, since it is smaller than the sum of its proper divisors (46857948).

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

22700100 is a wasteful number, since it uses less digits than its factorization.

22700100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4485 (or 4478 counting only the distinct ones).

The product of its (nonzero) digits is 28, while the sum is 12.

The square root of 22700100 is about 4764.4621942041. The cubic root of 22700100 is about 283.1452346302.

Adding to 22700100 its reverse (100722), we get a palindrome (22800822).

The spelling of 22700100 in words is "twenty-two million, seven hundred thousand, one hundred".