28630042 has 16 divisors (see below), whose sum is σ = 49151232. Its totient is φ = 12252240.

The previous prime is 28629977. The next prime is 28630051. The reversal of 28630042 is 24003682.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 28629989 and 28630016.

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, 14367 + ... + 16237.

It is an arithmetic number, because the mean of its divisors is an integer number (3071952).

Almost surely, 2^28630042 is an apocalyptic number.

28630042 is a deficient number, since it is larger than the sum of its proper divisors (20521190).

28630042 is a wasteful number, since it uses less digits than its factorization.

28630042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2973.

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 28630042 is about 5350.7048133867. The cubic root of 28630042 is about 305.9196180568.

The spelling of 28630042 in words is "twenty-eight million, six hundred thirty thousand, forty-two".