28769336986 has 16 divisors (see below), whose sum is σ = 47607047208. Its totient is φ = 12954297600.

The previous prime is 28769336977. The next prime is 28769337019. The reversal of 28769336986 is 68963396782.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 17706294225 + 11063042761 = 133065^2 + 105181^2 .

It is a super-2 number, since 2×28769336986² (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 (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13492995 + ... + 13495126.

Almost surely, 2^28769336986 is an apocalyptic number.

28769336986 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

28769336986 is a deficient number, since it is larger than the sum of its proper divisors (18837710222).

28769336986 is a wasteful number, since it uses less digits than its factorization.

28769336986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26988177.

The product of its digits is 141087744, while the sum is 67.

The spelling of 28769336986 in words is "twenty-eight billion, seven hundred sixty-nine million, three hundred thirty-six thousand, nine hundred eighty-six".