28304076120 has 128 divisors (see below), whose sum is σ = 87369891840. Its totient is φ = 7330933760.

The previous prime is 28304076113. The next prime is 28304076127. The reversal of 28304076120 is 2167040382.

It is an interprime number because it is at equal distance from previous prime (28304076113) and next prime (28304076127).

It is a super-2 number, since 2×28304076120² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28304076127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1104169 + ... + 1129511.

It is an arithmetic number, because the mean of its divisors is an integer number (682577280).

Almost surely, 2^28304076120 is an apocalyptic number.

28304076120 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 28304076120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43684945920).

28304076120 is an abundant number, since it is smaller than the sum of its proper divisors (59065815720).

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

28304076120 is a wasteful number, since it uses less digits than its factorization.

28304076120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25625 (or 25621 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 33.

The spelling of 28304076120 in words is "twenty-eight billion, three hundred four million, seventy-six thousand, one hundred twenty".