28995430913280 has 1728 divisors, whose sum is σ = 113852661511680. Its totient is φ = 7064838144000.

The previous prime is 28995430913249. The next prime is 28995430913327. The reversal of 28995430913280 is 8231903459982.

28995430913280 is a `hidden beast` number, since 2 + 8 + 9 + 9 + 5 + 430 + 91 + 32 + 80 = 666.

It is a tau number, because it is divible by the number of its divisors (1728).

It is a congruent number.

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, 103186586740 + ... + 103186587020.

Almost surely, 2^{28995430913280} is an apocalyptic number.

28995430913280 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 28995430913280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (56926330755840).

28995430913280 is an abundant number, since it is smaller than the sum of its proper divisors (84857230598400).

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

28995430913280 is an equidigital number, since it uses as much as digits as its factorization.

28995430913280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 507 (or 455 counting only the distinct ones).

The product of its (nonzero) digits is 33592320, while the sum is 63.

The spelling of 28995430913280 in words is "twenty-eight trillion, nine hundred ninety-five billion, four hundred thirty million, nine hundred thirteen thousand, two hundred eighty".