28999693461 has 8 divisors (see below), whose sum is σ = 38970717184. Its totient is φ = 19180899360.

The previous prime is 28999693421. The next prime is 28999693493. The reversal of 28999693461 is 16439699982.

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 28999693461 - 2⁹ = 28999692949 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28999693392 and 28999693401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28999693421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38056960 + ... + 38057721.

It is an arithmetic number, because the mean of its divisors is an integer number (4871339648).

Almost surely, 2^28999693461 is an apocalyptic number.

It is an amenable number.

28999693461 is a deficient number, since it is larger than the sum of its proper divisors (9971023723).

28999693461 is a wasteful number, since it uses less digits than its factorization.

28999693461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76114811.

The product of its digits is 45349632, while the sum is 66.

The spelling of 28999693461 in words is "twenty-eight billion, nine hundred ninety-nine million, six hundred ninety-three thousand, four hundred sixty-one".