28511042 has 24 divisors (see below), whose sum is σ = 50602320. Its totient is φ = 12009480.

The previous prime is 28511011. The next prime is 28511047. The reversal of 28511042 is 24011582.

It is a junction number, because it is equal to n+sod(n) for n = 28510999 and 28511017.

It is not an unprimeable number, because it can be changed into a prime (28511047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3317 + ... + 8247.

It is an arithmetic number, because the mean of its divisors is an integer number (2108430).

Almost surely, 2^28511042 is an apocalyptic number.

28511042 is a deficient number, since it is larger than the sum of its proper divisors (22091278).

28511042 is a wasteful number, since it uses less digits than its factorization.

28511042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5006 (or 4999 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 23.

The square root of 28511042 is about 5339.5732039181. The cubic root of 28511042 is about 305.4951805683.

The spelling of 28511042 in words is "twenty-eight million, five hundred eleven thousand, forty-two".