28017030 has 32 divisors (see below), whose sum is σ = 67901184. Its totient is φ = 7397856.

The previous prime is 28017023. The next prime is 28017043. The reversal of 28017030 is 3071082.

It is a junction number, because it is equal to n+sod(n) for n = 28016988 and 28017006.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 1444 + ... + 7623.

It is an arithmetic number, because the mean of its divisors is an integer number (2121912).

Almost surely, 2^28017030 is an apocalyptic number.

28017030 is an abundant number, since it is smaller than the sum of its proper divisors (39884154).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28017030 is a wasteful number, since it uses less digits than its factorization.

28017030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9180.

The product of its (nonzero) digits is 336, while the sum is 21.

The square root of 28017030 is about 5293.1115612653. Note that the first 3 decimals coincide. The cubic root of 28017030 is about 303.7204479370.

The spelling of 28017030 in words is "twenty-eight million, seventeen thousand, thirty".