28798346520 has 96 divisors (see below), whose sum is σ = 96613845120. Its totient is φ = 7431828480.

The previous prime is 28798346513. The next prime is 28798346597. The reversal of 28798346520 is 2564389782.

28798346520 is a `hidden beast` number, since 2 + 8 + 79 + 8 + 3 + 46 + 520 = 666.

It is a super-2 number, since 2×28798346520² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1279089 + ... + 1301408.

It is an arithmetic number, because the mean of its divisors is an integer number (1006394220).

Almost surely, 2^28798346520 is an apocalyptic number.

28798346520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28798346520 is an abundant number, since it is smaller than the sum of its proper divisors (67815498600).

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

28798346520 is a wasteful number, since it uses less digits than its factorization.

28798346520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2580545 (or 2580538 counting only the distinct ones).

The product of its (nonzero) digits is 5806080, while the sum is 54.

The spelling of 28798346520 in words is "twenty-eight billion, seven hundred ninety-eight million, three hundred forty-six thousand, five hundred twenty".