28530746 has 8 divisors (see below), whose sum is σ = 42863040. Its totient is φ = 14243068.

The previous prime is 28530721. The next prime is 28530763. The reversal of 28530746 is 64703582.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

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 3 ways as a sum of consecutive naturals, for example, 9506 + ... + 12141.

It is an arithmetic number, because the mean of its divisors is an integer number (5357880).

Almost surely, 2^28530746 is an apocalyptic number.

28530746 is a deficient number, since it is larger than the sum of its proper divisors (14332294).

28530746 is a wasteful number, since it uses less digits than its factorization.

28530746 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22308.

The product of its (nonzero) digits is 40320, while the sum is 35.

The square root of 28530746 is about 5341.4179765302. The cubic root of 28530746 is about 305.5655403361.

The spelling of 28530746 in words is "twenty-eight million, five hundred thirty thousand, seven hundred forty-six".