28857046 has 8 divisors (see below), whose sum is σ = 43878744. Its totient is φ = 14230800.

The previous prime is 28856983. The next prime is 28857047. The reversal of 28857046 is 64075882.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×28857046² = 1665458207692232, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28857047) 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, 98680 + ... + 98971.

It is an arithmetic number, because the mean of its divisors is an integer number (5484843).

Almost surely, 2^28857046 is an apocalyptic number.

28857046 is a deficient number, since it is larger than the sum of its proper divisors (15021698).

28857046 is a wasteful number, since it uses less digits than its factorization.

28857046 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197726.

The product of its (nonzero) digits is 107520, while the sum is 40.

The square root of 28857046 is about 5371.8754639325. The cubic root of 28857046 is about 306.7260232197.

The spelling of 28857046 in words is "twenty-eight million, eight hundred fifty-seven thousand, forty-six".