28132912 has 10 divisors (see below), whose sum is σ = 54507548. Its totient is φ = 14066448.

The previous prime is 28132891. The next prime is 28132919. The reversal of 28132912 is 21923182.

It is not an unprimeable number, because it can be changed into a prime (28132919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 879138 + ... + 879169.

Almost surely, 2^28132912 is an apocalyptic number.

It is an amenable number.

28132912 is a deficient number, since it is larger than the sum of its proper divisors (26374636).

28132912 is a wasteful number, since it uses less digits than its factorization.

28132912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1758315 (or 1758309 counting only the distinct ones).

The product of its digits is 1728, while the sum is 28.

The square root of 28132912 is about 5304.0467569583. The cubic root of 28132912 is about 304.1386140722.

The spelling of 28132912 in words is "twenty-eight million, one hundred thirty-two thousand, nine hundred twelve".