22150728936 has 128 divisors (see below), whose sum is σ = 70395494400. Its totient is φ = 6321965760.

The previous prime is 22150728917. The next prime is 22150728937. The reversal of 22150728936 is 63982705122.

It is a super-2 number, since 2×22150728936² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 22150728891 and 22150728900.

It is not an unprimeable number, because it can be changed into a prime (22150728937) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1491001 + ... + 1505783.

It is an arithmetic number, because the mean of its divisors is an integer number (549964800).

Almost surely, 2^22150728936 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 22150728936, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35197747200).

22150728936 is an abundant number, since it is smaller than the sum of its proper divisors (48244765464).

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

22150728936 is a wasteful number, since it uses less digits than its factorization.

22150728936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15796 (or 15786 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 45.

The spelling of 22150728936 in words is "twenty-two billion, one hundred fifty million, seven hundred twenty-eight thousand, nine hundred thirty-six".