28866609760 has 48 divisors (see below), whose sum is σ = 70397292672. Its totient is φ = 11174169600.

The previous prime is 28866609727. The next prime is 28866609763. The reversal of 28866609760 is 6790666882.

It is a super-2 number, since 2×28866609760² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 28866609695 and 28866609704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28866609763) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2904981 + ... + 2914900.

It is an arithmetic number, because the mean of its divisors is an integer number (1466610264).

Almost surely, 2^28866609760 is an apocalyptic number.

28866609760 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28866609760 is an abundant number, since it is smaller than the sum of its proper divisors (41530682912).

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

28866609760 is a wasteful number, since it uses less digits than its factorization.

28866609760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5819927 (or 5819919 counting only the distinct ones).

The product of its (nonzero) digits is 10450944, while the sum is 58.

The spelling of 28866609760 in words is "twenty-eight billion, eight hundred sixty-six million, six hundred nine thousand, seven hundred sixty".