28365685730 has 64 divisors (see below), whose sum is σ = 52994113920. Its totient is φ = 10924429824.

The previous prime is 28365685729. The next prime is 28365685759. The reversal of 28365685730 is 3758656382.

It is a super-2 number, since 2×28365685730² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15192257 + ... + 15194123.

It is an arithmetic number, because the mean of its divisors is an integer number (828033030).

Almost surely, 2^28365685730 is an apocalyptic number.

28365685730 is a deficient number, since it is larger than the sum of its proper divisors (24628428190).

28365685730 is a wasteful number, since it uses less digits than its factorization.

28365685730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2403.

The product of its (nonzero) digits is 7257600, while the sum is 53.

The spelling of 28365685730 in words is "twenty-eight billion, three hundred sixty-five million, six hundred eighty-five thousand, seven hundred thirty".