28764215227966 has 32 divisors (see below), whose sum is σ = 43386464160000. Its totient is φ = 14302225048320.

The previous prime is 28764215227921. The next prime is 28764215228003. The reversal of 28764215227966 is 66972251246782.

It is a happy number.

It is a super-2 number, since 2×28764215227966² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2950473660 + ... + 2950483408.

It is an arithmetic number, because the mean of its divisors is an integer number (1355827005000).

Almost surely, 2^{28764215227966} is an apocalyptic number.

28764215227966 is a deficient number, since it is larger than the sum of its proper divisors (14622248932034).

28764215227966 is a wasteful number, since it uses less digits than its factorization.

28764215227966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17364.

The product of its digits is 243855360, while the sum is 67.

The spelling of 28764215227966 in words is "twenty-eight trillion, seven hundred sixty-four billion, two hundred fifteen million, two hundred twenty-seven thousand, nine hundred sixty-six".