28756042 has 24 divisors (see below), whose sum is σ = 50561280. Its totient is φ = 12229560.

The previous prime is 28756037. The next prime is 28756043. The reversal of 28756042 is 24065782.

It is a Smith number, since the sum of its digits (34) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 28755989 and 28756007.

It is not an unprimeable number, because it can be changed into a prime (28756043) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12567 + ... + 14677.

It is an arithmetic number, because the mean of its divisors is an integer number (2106720).

Almost surely, 2^28756042 is an apocalyptic number.

28756042 is a deficient number, since it is larger than the sum of its proper divisors (21805238).

28756042 is a wasteful number, since it uses less digits than its factorization.

28756042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2266 (or 2259 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 34.

The square root of 28756042 is about 5362.4660371885. The cubic root of 28756042 is about 306.3677424814.

The spelling of 28756042 in words is "twenty-eight million, seven hundred fifty-six thousand, forty-two".