28169502207 has 32 divisors (see below), whose sum is σ = 46836432384. Its totient is φ = 14630630400.

The previous prime is 28169502199. The next prime is 28169502247. The reversal of 28169502207 is 70220596182.

It is not a de Polignac number, because 28169502207 - 2³ = 28169502199 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28169502247) 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, 1682823 + ... + 1699479.

It is an arithmetic number, because the mean of its divisors is an integer number (1463638512).

Almost surely, 2^28169502207 is an apocalyptic number.

28169502207 is a deficient number, since it is larger than the sum of its proper divisors (18666930177).

28169502207 is a wasteful number, since it uses less digits than its factorization.

28169502207 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23999.

The product of its (nonzero) digits is 120960, while the sum is 42.

The spelling of 28169502207 in words is "twenty-eight billion, one hundred sixty-nine million, five hundred two thousand, two hundred seven".