28075678 has 4 divisors (see below), whose sum is σ = 42113520. Its totient is φ = 14037838.

The previous prime is 28075669. The next prime is 28075699. The reversal of 28075678 is 87657082.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7018918 + ... + 7018921.

It is an arithmetic number, because the mean of its divisors is an integer number (10528380).

Almost surely, 2^28075678 is an apocalyptic number.

28075678 is a deficient number, since it is larger than the sum of its proper divisors (14037842).

28075678 is a wasteful number, since it uses less digits than its factorization.

28075678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14037841.

The product of its (nonzero) digits is 188160, while the sum is 43.

The square root of 28075678 is about 5298.6486956582. The cubic root of 28075678 is about 303.9322260619.

The spelling of 28075678 in words is "twenty-eight million, seventy-five thousand, six hundred seventy-eight".