28658629923 has 32 divisors (see below), whose sum is σ = 49177116672. Its totient is φ = 14407351200.

The previous prime is 28658629889. The next prime is 28658629933. The reversal of 28658629923 is 32992685682.

It is not a de Polignac number, because 28658629923 - 2¹⁰ = 28658628899 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28658629933) 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, 1993861 + ... + 2008182.

It is an arithmetic number, because the mean of its divisors is an integer number (1536784896).

Almost surely, 2^28658629923 is an apocalyptic number.

28658629923 is a deficient number, since it is larger than the sum of its proper divisors (20518486749).

28658629923 is a wasteful number, since it uses less digits than its factorization.

28658629923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4002095.

The product of its digits is 22394880, while the sum is 60.

The spelling of 28658629923 in words is "twenty-eight billion, six hundred fifty-eight million, six hundred twenty-nine thousand, nine hundred twenty-three".