28299048980 has 48 divisors (see below), whose sum is σ = 62950381200. Its totient is φ = 10649253888.

The previous prime is 28299048977. The next prime is 28299048983. The reversal of 28299048980 is 8984099282.

It is an interprime number because it is at equal distance from previous prime (28299048977) and next prime (28299048983).

It can be written as a sum of positive squares in 8 ways, for example, as 2112689296 + 26186359684 = 45964^2 + 161822^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28299048983) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 850334 + ... + 882986.

It is an arithmetic number, because the mean of its divisors is an integer number (1311466275).

Almost surely, 2^28299048980 is an apocalyptic number.

28299048980 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28299048980 is an abundant number, since it is smaller than the sum of its proper divisors (34651332220).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28299048980 is a wasteful number, since it uses less digits than its factorization.

28299048980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35228 (or 35226 counting only the distinct ones).

The product of its (nonzero) digits is 5971968, while the sum is 59.

The spelling of 28299048980 in words is "twenty-eight billion, two hundred ninety-nine million, forty-eight thousand, nine hundred eighty".