28292980000 has 120 divisors (see below), whose sum is σ = 72006622380. Its totient is φ = 10926720000.

The previous prime is 28292979989. The next prime is 28292980007. The reversal of 28292980000 is 8929282.

It is a happy number.

It can be written as a sum of positive squares in 10 ways, for example, as 8272993936 + 20019986064 = 90956^2 + 141492^2 .

It is a Harshad number since it is a multiple of its sum of digits (40).

It is not an unprimeable number, because it can be changed into a prime (28292980007) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 555610 + ... + 604390.

Almost surely, 2^28292980000 is an apocalyptic number.

28292980000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28292980000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36003311190).

28292980000 is an abundant number, since it is smaller than the sum of its proper divisors (43713642380).

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

28292980000 is an equidigital number, since it uses as much as digits as its factorization.

28292980000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48840 (or 48817 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 40.

The spelling of 28292980000 in words is "twenty-eight billion, two hundred ninety-two million, nine hundred eighty thousand".