28234186497 has 32 divisors (see below), whose sum is σ = 45642817920. Its totient is φ = 17107200000.

The previous prime is 28234186489. The next prime is 28234186499. The reversal of 28234186497 is 79468143282.

28234186497 is a `hidden beast` number, since 2 + 82 + 3 + 418 + 64 + 97 = 666.

It is not a de Polignac number, because 28234186497 - 2³ = 28234186489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28234186499) 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, 1415997 + ... + 1435797.

It is an arithmetic number, because the mean of its divisors is an integer number (1426338060).

Almost surely, 2^28234186497 is an apocalyptic number.

28234186497 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

28234186497 is a deficient number, since it is larger than the sum of its proper divisors (17408631423).

28234186497 is a wasteful number, since it uses less digits than its factorization.

28234186497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24622 (or 24616 counting only the distinct ones).

The product of its digits is 4644864, while the sum is 54.

The spelling of 28234186497 in words is "twenty-eight billion, two hundred thirty-four million, one hundred eighty-six thousand, four hundred ninety-seven".