28406832 has 40 divisors (see below), whose sum is σ = 75096384. Its totient is φ = 9248064.

The previous prime is 28406831. The next prime is 28406837. The reversal of 28406832 is 23860482.

It is a junction number, because it is equal to n+sod(n) for n = 28406793 and 28406802.

It is not an unprimeable number, because it can be changed into a prime (28406831) 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 in 7 ways as a sum of consecutive naturals, for example, 4818 + ... + 8945.

Almost surely, 2^28406832 is an apocalyptic number.

It is an amenable number.

28406832 is an abundant number, since it is smaller than the sum of its proper divisors (46689552).

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

28406832 is a wasteful number, since it uses less digits than its factorization.

28406832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13817 (or 13811 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 33.

The square root of 28406832 is about 5329.8060002218. The cubic root of 28406832 is about 305.1225235588.

The spelling of 28406832 in words is "twenty-eight million, four hundred six thousand, eight hundred thirty-two".