28187672 has 16 divisors (see below), whose sum is σ = 53044200. Its totient is φ = 14042560.

The previous prime is 28187669. The next prime is 28187693. The reversal of 28187672 is 27678182.

It is a congruent number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 4022 + ... + 8517.

Almost surely, 2^28187672 is an apocalyptic number.

It is an amenable number.

28187672 is a deficient number, since it is larger than the sum of its proper divisors (24856528).

28187672 is a wasteful number, since it uses less digits than its factorization.

28187672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12826 (or 12822 counting only the distinct ones).

The product of its digits is 75264, while the sum is 41.

The square root of 28187672 is about 5309.2063437015. The cubic root of 28187672 is about 304.3358188768.

The spelling of 28187672 in words is "twenty-eight million, one hundred eighty-seven thousand, six hundred seventy-two".