28415104636 has 12 divisors (see below), whose sum is σ = 51888452112. Its totient is φ = 13589832608.

The previous prime is 28415104621. The next prime is 28415104661. The reversal of 28415104636 is 63640151482.

It is a happy number.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 154429825 + ... + 154430008.

It is an arithmetic number, because the mean of its divisors is an integer number (4324037676).

Almost surely, 2^28415104636 is an apocalyptic number.

It is an amenable number.

28415104636 is a deficient number, since it is larger than the sum of its proper divisors (23473347476).

28415104636 is a wasteful number, since it uses less digits than its factorization.

28415104636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 308859860 (or 308859858 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 40.

The spelling of 28415104636 in words is "twenty-eight billion, four hundred fifteen million, one hundred four thousand, six hundred thirty-six".