28840469580 has 576 divisors, whose sum is σ = 103557242880. Its totient is φ = 6684125184.

The previous prime is 28840469573. The next prime is 28840469633. The reversal of 28840469580 is 8596404882.

28840469580 is a `hidden beast` number, since 28 + 84 + 0 + 469 + 5 + 80 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 129329349 + ... + 129329571.

It is an arithmetic number, because the mean of its divisors is an integer number (179786880).

Almost surely, 2^28840469580 is an apocalyptic number.

28840469580 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 28840469580, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51778621440).

28840469580 is an abundant number, since it is smaller than the sum of its proper divisors (74716773300).

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

28840469580 is a wasteful number, since it uses less digits than its factorization.

28840469580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 372 (or 358 counting only the distinct ones).

The product of its (nonzero) digits is 4423680, while the sum is 54.

The spelling of 28840469580 in words is "twenty-eight billion, eight hundred forty million, four hundred sixty-nine thousand, five hundred eighty".