28906432 has 14 divisors (see below), whose sum is σ = 57361328. Its totient is φ = 14453184.

The previous prime is 28906421. The next prime is 28906433. The reversal of 28906432 is 23460982.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28906433) 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, 225768 + ... + 225895.

Almost surely, 2^28906432 is an apocalyptic number.

It is an amenable number.

28906432 is a deficient number, since it is larger than the sum of its proper divisors (28454896).

28906432 is an equidigital number, since it uses as much as digits as its factorization.

28906432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 451675 (or 451665 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 28906432 is about 5376.4702175312. The cubic root of 28906432 is about 306.9009006501.

The spelling of 28906432 in words is "twenty-eight million, nine hundred six thousand, four hundred thirty-two".