28501217030 has 32 divisors (see below), whose sum is σ = 60271108128. Its totient is φ = 9566841600.

The previous prime is 28501216999. The next prime is 28501217039. The reversal of 28501217030 is 3071210582.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 28501216984 and 28501217002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28501217039) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9964031 + ... + 9966890.

It is an arithmetic number, because the mean of its divisors is an integer number (1883472129).

Almost surely, 2^28501217030 is an apocalyptic number.

28501217030 is an abundant number, since it is smaller than the sum of its proper divisors (31769891098).

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

28501217030 is a wasteful number, since it uses less digits than its factorization.

28501217030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19930952.

The product of its (nonzero) digits is 3360, while the sum is 29.

The spelling of 28501217030 in words is "twenty-eight billion, five hundred one million, two hundred seventeen thousand, thirty".