28964187123 has 8 divisors (see below), whose sum is σ = 38683176336. Its totient is φ = 19277328000.

The previous prime is 28964187103. The next prime is 28964187139. The reversal of 28964187123 is 32178146982.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 28964187123 - 2¹⁰ = 28964186099 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28964187103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8030418 + ... + 8034023.

It is an arithmetic number, because the mean of its divisors is an integer number (4835397042).

Almost surely, 2^28964187123 is an apocalyptic number.

28964187123 is a deficient number, since it is larger than the sum of its proper divisors (9718989213).

28964187123 is a wasteful number, since it uses less digits than its factorization.

28964187123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16065045.

The product of its digits is 1161216, while the sum is 51.

The spelling of 28964187123 in words is "twenty-eight billion, nine hundred sixty-four million, one hundred eighty-seven thousand, one hundred twenty-three".