28307663932 has 12 divisors (see below), whose sum is σ = 50236136496. Its totient is φ = 13954482080.

The previous prime is 28307663903. The next prime is 28307663933. The reversal of 28307663932 is 23936670382.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28307663933) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 49837153 + ... + 49837720.

It is an arithmetic number, because the mean of its divisors is an integer number (4186344708).

Almost surely, 2^28307663932 is an apocalyptic number.

It is an amenable number.

28307663932 is a deficient number, since it is larger than the sum of its proper divisors (21928472564).

28307663932 is a wasteful number, since it uses less digits than its factorization.

28307663932 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99674948 (or 99674946 counting only the distinct ones).

The product of its (nonzero) digits is 1959552, while the sum is 49.

The spelling of 28307663932 in words is "twenty-eight billion, three hundred seven million, six hundred sixty-three thousand, nine hundred thirty-two".