22360728 has 96 divisors (see below), whose sum is σ = 62586000. Its totient is φ = 6649344.

The previous prime is 22360717. The next prime is 22360759. The reversal of 22360728 is 82706322.

It is a junction number, because it is equal to n+sod(n) for n = 22360695 and 22360704.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 149998 + ... + 150146.

Almost surely, 2^22360728 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 22360728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31293000).

22360728 is an abundant number, since it is smaller than the sum of its proper divisors (40225272).

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

22360728 is a wasteful number, since it uses less digits than its factorization.

22360728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221 (or 204 counting only the distinct ones).

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

The square root of 22360728 is about 4728.7131441863. The cubic root of 22360728 is about 281.7271139170.

The spelling of 22360728 in words is "twenty-two million, three hundred sixty thousand, seven hundred twenty-eight".