28689046 has 16 divisors (see below), whose sum is σ = 43683840. Its totient is φ = 14129640.

The previous prime is 28688987. The next prime is 28689071. The reversal of 28689046 is 64098682.

It is a happy number.

It is a super-2 number, since 2×28689046² = 1646122720780232, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 28688993 and 28689011.

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 7 ways as a sum of consecutive naturals, for example, 45151 + ... + 45781.

It is an arithmetic number, because the mean of its divisors is an integer number (2730240).

Almost surely, 2^28689046 is an apocalyptic number.

28689046 is a deficient number, since it is larger than the sum of its proper divisors (14994794).

28689046 is a wasteful number, since it uses less digits than its factorization.

28689046 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 939.

The product of its (nonzero) digits is 165888, while the sum is 43.

The square root of 28689046 is about 5356.2156416634. The cubic root of 28689046 is about 306.1296316638.

The spelling of 28689046 in words is "twenty-eight million, six hundred eighty-nine thousand, forty-six".