28802520019 has 96 divisors (see below), whose sum is σ = 38814720000. Its totient is φ = 21143566080.

The previous prime is 28802519927. The next prime is 28802520029. The reversal of 28802520019 is 91002520882.

It is not a de Polignac number, because 28802520019 - 2¹⁵ = 28802487251 is a prime.

It is a super-2 number, since 2×28802520019² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a self number, because there is not a number n which added to its sum of digits gives 28802520019.

It is not an unprimeable number, because it can be changed into a prime (28802520029) 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 95 ways as a sum of consecutive naturals, for example, 57720232 + ... + 57720730.

It is an arithmetic number, because the mean of its divisors is an integer number (404320000).

Almost surely, 2^28802520019 is an apocalyptic number.

28802520019 is a deficient number, since it is larger than the sum of its proper divisors (10012199981).

28802520019 is a wasteful number, since it uses less digits than its factorization.

28802520019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 673 (or 666 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 37.

The spelling of 28802520019 in words is "twenty-eight billion, eight hundred two million, five hundred twenty thousand, nineteen".