28133200538 has 16 divisors (see below), whose sum is σ = 43565195520. Its totient is φ = 13611554400.

The previous prime is 28133200519. The next prime is 28133200547. The reversal of 28133200538 is 83500233182.

It is a super-2 number, since 2×28133200538² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 28133200498 and 28133200507.

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, 1182278 + ... + 1205838.

It is an arithmetic number, because the mean of its divisors is an integer number (2722824720).

Almost surely, 2^28133200538 is an apocalyptic number.

28133200538 is a deficient number, since it is larger than the sum of its proper divisors (15431994982).

28133200538 is a wasteful number, since it uses less digits than its factorization.

28133200538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42853.

The product of its (nonzero) digits is 34560, while the sum is 35.

The spelling of 28133200538 in words is "twenty-eight billion, one hundred thirty-three million, two hundred thousand, five hundred thirty-eight".