28232646169 has 16 divisors (see below), whose sum is σ = 34752581248. Its totient is φ = 22334890752.

The previous prime is 28232646163. The next prime is 28232646179. The reversal of 28232646169 is 96164623282.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 28232646169 - 2¹⁵ = 28232613401 is a prime.

It is a super-2 number, since 2×28232646169² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28232646163) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 852529 + ... + 885025.

It is an arithmetic number, because the mean of its divisors is an integer number (2172036328).

Almost surely, 2^28232646169 is an apocalyptic number.

It is an amenable number.

28232646169 is a deficient number, since it is larger than the sum of its proper divisors (6519935079).

28232646169 is a wasteful number, since it uses less digits than its factorization.

28232646169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42064.

The product of its digits is 1492992, while the sum is 49.

The spelling of 28232646169 in words is "twenty-eight billion, two hundred thirty-two million, six hundred forty-six thousand, one hundred sixty-nine".