28707446 has 4 divisors (see below), whose sum is σ = 43061172. Its totient is φ = 14353722.

The previous prime is 28707443. The next prime is 28707451. The reversal of 28707446 is 64470782.

It is a semiprime because it is the product of two primes.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28707443) 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 as a sum of consecutive naturals, namely, 7176860 + ... + 7176863.

It is an arithmetic number, because the mean of its divisors is an integer number (10765293).

Almost surely, 2^28707446 is an apocalyptic number.

28707446 is a deficient number, since it is larger than the sum of its proper divisors (14353726).

28707446 is a wasteful number, since it uses less digits than its factorization.

28707446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14353725.

The product of its (nonzero) digits is 75264, while the sum is 38.

The square root of 28707446 is about 5357.9329969681. The cubic root of 28707446 is about 306.1950640875.

The spelling of 28707446 in words is "twenty-eight million, seven hundred seven thousand, four hundred forty-six".