2133736728 has 16 divisors (see below), whose sum is σ = 5334341880. Its totient is φ = 711245568.

The previous prime is 2133736721. The next prime is 2133736729. The reversal of 2133736728 is 8276373312.

It is a super-2 number, since 2×2133736728² = 9105664848832291968, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2133736728.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2133736721) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44452825 + ... + 44452872.

Almost surely, 2^2133736728 is an apocalyptic number.

It is an amenable number.

2133736728 is an abundant number, since it is smaller than the sum of its proper divisors (3200605152).

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

2133736728 is a wasteful number, since it uses less digits than its factorization.

2133736728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88905706 (or 88905702 counting only the distinct ones).

The product of its digits is 254016, while the sum is 42.

The square root of 2133736728 is about 46192.3882041187. The cubic root of 2133736728 is about 1287.4003146247.

The spelling of 2133736728 in words is "two billion, one hundred thirty-three million, seven hundred thirty-six thousand, seven hundred twenty-eight".