28211600520 has 96 divisors (see below), whose sum is σ = 96513393600. Its totient is φ = 7127139456.

The previous prime is 28211600489. The next prime is 28211600531. The reversal of 28211600520 is 2500611282.

It is a happy number.

28211600520 is a `hidden beast` number, since 2 + 8 + 2 + 1 + 1 + 600 + 52 + 0 = 666.

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, 2055412 + ... + 2069091.

It is an arithmetic number, because the mean of its divisors is an integer number (1005347850).

Almost surely, 2^28211600520 is an apocalyptic number.

28211600520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28211600520 is an abundant number, since it is smaller than the sum of its proper divisors (68301793080).

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

28211600520 is a wasteful number, since it uses less digits than its factorization.

28211600520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4124539 (or 4124532 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The spelling of 28211600520 in words is "twenty-eight billion, two hundred eleven million, six hundred thousand, five hundred twenty".