28433712 has 20 divisors (see below), whose sum is σ = 73453880. Its totient is φ = 9477888.

The previous prime is 28433711. The next prime is 28433729. The reversal of 28433712 is 21733482.

It is a self number, because there is not a number n which added to its sum of digits gives 28433712.

It is not an unprimeable number, because it can be changed into a prime (28433711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 296137 + ... + 296232.

It is an arithmetic number, because the mean of its divisors is an integer number (3672694).

Almost surely, 2^28433712 is an apocalyptic number.

It is an amenable number.

28433712 is an abundant number, since it is smaller than the sum of its proper divisors (45020168).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28433712 is a wasteful number, since it uses less digits than its factorization.

28433712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 592380 (or 592374 counting only the distinct ones).

The product of its digits is 8064, while the sum is 30.

The square root of 28433712 is about 5332.3270717389. The cubic root of 28433712 is about 305.2187340741.

It can be divided in two parts, 2843 and 3712, that added together give a triangular number (6555 = T₁₁₄).

The spelling of 28433712 in words is "twenty-eight million, four hundred thirty-three thousand, seven hundred twelve".