28432612 has 12 divisors (see below), whose sum is σ = 53584636. Its totient is φ = 13122720.

The previous prime is 28432609. The next prime is 28432637. The reversal of 28432612 is 21623482.

It can be written as a sum of positive squares in 2 ways, for example, as 11655396 + 16777216 = 3414^2 + 4096^2 .

It is a congruent number.

It is an unprimeable number.

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, 273339 + ... + 273442.

Almost surely, 2^28432612 is an apocalyptic number.

It is an amenable number.

28432612 is a deficient number, since it is larger than the sum of its proper divisors (25152024).

28432612 is a wasteful number, since it uses less digits than its factorization.

28432612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 546798 (or 546796 counting only the distinct ones).

The product of its digits is 4608, while the sum is 28.

The square root of 28432612 is about 5332.2239262807. The cubic root of 28432612 is about 305.2147980780.

It can be divided in two parts, 284 and 32612, that added together give a triangular number (32896 = T₂₅₆).

The spelling of 28432612 in words is "twenty-eight million, four hundred thirty-two thousand, six hundred twelve".