28948492799 has 4 divisors (see below), whose sum is σ = 29019271920. Its totient is φ = 28877713680.

The previous prime is 28948492763. The next prime is 28948492817. The reversal of 28948492799 is 99729484982.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28948492799 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28948492709) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35388947 + ... + 35389764.

It is an arithmetic number, because the mean of its divisors is an integer number (7254817980).

Almost surely, 2^28948492799 is an apocalyptic number.

28948492799 is a deficient number, since it is larger than the sum of its proper divisors (70779121).

28948492799 is an equidigital number, since it uses as much as digits as its factorization.

28948492799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70779120.

The product of its digits is 188116992, while the sum is 71.

It can be divided in two parts, 289484 and 92799, that added together give a palindrome (382283).

The spelling of 28948492799 in words is "twenty-eight billion, nine hundred forty-eight million, four hundred ninety-two thousand, seven hundred ninety-nine".