28665102532242 has 64 divisors (see below), whose sum is σ = 63420862906368. Its totient is φ = 8565180936000.

The previous prime is 28665102532219. The next prime is 28665102532243. The reversal of 28665102532242 is 24223520156682.

It is a junction number, because it is equal to n+sod(n) for n = 28665102532191 and 28665102532200.

It is not an unprimeable number, because it can be changed into a prime (28665102532243) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9201234 + ... + 11916077.

It is an arithmetic number, because the mean of its divisors is an integer number (990950982912).

Almost surely, 2^{28665102532242} is an apocalyptic number.

28665102532242 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

28665102532242 is an abundant number, since it is smaller than the sum of its proper divisors (34755760374126).

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

28665102532242 is a wasteful number, since it uses less digits than its factorization.

28665102532242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21117615.

The product of its (nonzero) digits is 2764800, while the sum is 48.

The spelling of 28665102532242 in words is "twenty-eight trillion, six hundred sixty-five billion, one hundred two million, five hundred thirty-two thousand, two hundred forty-two".