28645745986 has 16 divisors (see below), whose sum is σ = 50480615808. Its totient is φ = 12019194000.

The previous prime is 28645745959. The next prime is 28645746007. The reversal of 28645745986 is 68954754682.

It is a super-2 number, since 2×28645745986² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50079690 + ... + 50080261.

It is an arithmetic number, because the mean of its divisors is an integer number (3155038488).

Almost surely, 2^28645745986 is an apocalyptic number.

28645745986 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

28645745986 is a deficient number, since it is larger than the sum of its proper divisors (21834869822).

28645745986 is a wasteful number, since it uses less digits than its factorization.

28645745986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100159977.

The product of its digits is 116121600, while the sum is 64.

The spelling of 28645745986 in words is "twenty-eight billion, six hundred forty-five million, seven hundred forty-five thousand, nine hundred eighty-six".