28530766 has 16 divisors (see below), whose sum is σ = 46873728. Its totient is φ = 12916600.

The previous prime is 28530763. The next prime is 28530767. The reversal of 28530766 is 66703582.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28530763) by changing a digit.

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, 3321 + ... + 8251.

It is an arithmetic number, because the mean of its divisors is an integer number (2929608).

Almost surely, 2^28530766 is an apocalyptic number.

28530766 is a deficient number, since it is larger than the sum of its proper divisors (18342962).

28530766 is a wasteful number, since it uses less digits than its factorization.

28530766 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5207.

The product of its (nonzero) digits is 60480, while the sum is 37.

The square root of 28530766 is about 5341.4198486919. The cubic root of 28530766 is about 305.5656117364.

The spelling of 28530766 in words is "twenty-eight million, five hundred thirty thousand, seven hundred sixty-six".