28038233137 has 8 divisors (see below), whose sum is σ = 28206230400. Its totient is φ = 27870658704.

The previous prime is 28038233131. The next prime is 28038233149. The reversal of 28038233137 is 73133283082.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28038233137 - 2³ = 28038233129 is a prime.

It is a super-2 number, since 2×28038233137² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 28038233137.

It is not an unprimeable number, because it can be changed into a prime (28038233131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27814 + ... + 238432.

It is an arithmetic number, because the mean of its divisors is an integer number (3525778800).

Almost surely, 2^28038233137 is an apocalyptic number.

It is an amenable number.

28038233137 is a deficient number, since it is larger than the sum of its proper divisors (167997263).

28038233137 is a wasteful number, since it uses less digits than its factorization.

28038233137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211415.

The product of its (nonzero) digits is 145152, while the sum is 40.

The spelling of 28038233137 in words is "twenty-eight billion, thirty-eight million, two hundred thirty-three thousand, one hundred thirty-seven".