28879792129 has 8 divisors (see below), whose sum is σ = 30054548160. Its totient is φ = 27716962896.

The previous prime is 28879792127. The next prime is 28879792133. The reversal of 28879792129 is 92129797882.

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

It is a cyclic number.

It is not a de Polignac number, because 28879792129 - 2¹ = 28879792127 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28879792127) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2976759 + ... + 2986444.

It is an arithmetic number, because the mean of its divisors is an integer number (3756818520).

Almost surely, 2^28879792129 is an apocalyptic number.

28879792129 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

28879792129 is a deficient number, since it is larger than the sum of its proper divisors (1174756031).

28879792129 is a wasteful number, since it uses less digits than its factorization.

28879792129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5963399.

The product of its digits is 18289152, while the sum is 64.

The spelling of 28879792129 in words is "twenty-eight billion, eight hundred seventy-nine million, seven hundred ninety-two thousand, one hundred twenty-nine".