28332691605 has 24 divisors (see below), whose sum is σ = 51694737120. Its totient is φ = 14315464800.

The previous prime is 28332691573. The next prime is 28332691697. The reversal of 28332691605 is 50619623382.

28332691605 is a `hidden beast` number, since 2 + 8 + 3 + 32 + 6 + 9 + 1 + 605 = 666.

It is not a de Polignac number, because 28332691605 - 2⁵ = 28332691573 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16567971 + ... + 16569680.

It is an arithmetic number, because the mean of its divisors is an integer number (2153947380).

Almost surely, 2^28332691605 is an apocalyptic number.

It is an amenable number.

28332691605 is a deficient number, since it is larger than the sum of its proper divisors (23362045515).

28332691605 is a wasteful number, since it uses less digits than its factorization.

28332691605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33137681 (or 33137678 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 45.

The spelling of 28332691605 in words is "twenty-eight billion, three hundred thirty-two million, six hundred ninety-one thousand, six hundred five".