28372818393 has 24 divisors (see below), whose sum is σ = 41722611840. Its totient is φ = 18574527840.

The previous prime is 28372818379. The next prime is 28372818407. The reversal of 28372818393 is 39381827382.

28372818393 is a `hidden beast` number, since 2 + 8 + 372 + 8 + 183 + 93 = 666.

It is an interprime number because it is at equal distance from previous prime (28372818379) and next prime (28372818407).

It is not a de Polignac number, because 28372818393 - 2⁸ = 28372818137 is a prime.

It is a super-3 number, since 3×28372818393³ (a number of 32 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (28372813393) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 471280 + ... + 528062.

It is an arithmetic number, because the mean of its divisors is an integer number (1738442160).

Almost surely, 2^28372818393 is an apocalyptic number.

It is an amenable number.

28372818393 is a deficient number, since it is larger than the sum of its proper divisors (13349793447).

28372818393 is a wasteful number, since it uses less digits than its factorization.

28372818393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57789 (or 57786 counting only the distinct ones).

The product of its digits is 3483648, while the sum is 54.

The spelling of 28372818393 in words is "twenty-eight billion, three hundred seventy-two million, eight hundred eighteen thousand, three hundred ninety-three".