122233728 has 64 divisors (see below), whose sum is σ = 329598720. Its totient is φ = 40128000.

The previous prime is 122233711. The next prime is 122233733. The reversal of 122233728 is 827332221.

It is a tau number, because it is divible by the number of its divisors (64).

It is a junction number, because it is equal to n+sod(n) for n = 122233695 and 122233704.

It is a congruent number.

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, 23353 + ... + 28103.

It is an arithmetic number, because the mean of its divisors is an integer number (5149980).

Almost surely, 2^122233728 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 122233728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (164799360).

122233728 is an abundant number, since it is smaller than the sum of its proper divisors (207364992).

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

122233728 is an equidigital number, since it uses as much as digits as its factorization.

122233728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4835 (or 4823 counting only the distinct ones).

The product of its digits is 8064, while the sum is 30.

The square root of 122233728 is about 11055.9363239845. The cubic root of 122233728 is about 496.2840897680.

Adding to 122233728 its reverse (827332221), we get a palindrome (949565949).

It can be divided in two parts, 12223 and 3728, that added together give a palindrome (15951).

The spelling of 122233728 in words is "one hundred twenty-two million, two hundred thirty-three thousand, seven hundred twenty-eight".