28765946 has 16 divisors (see below), whose sum is σ = 48345120. Its totient is φ = 12721680.

The previous prime is 28765907. The next prime is 28765967. The reversal of 28765946 is 64956782.

It is a self number, because there is not a number n which added to its sum of digits gives 28765946.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16856 + ... + 18483.

It is an arithmetic number, because the mean of its divisors is an integer number (3021570).

Almost surely, 2^28765946 is an apocalyptic number.

28765946 is a deficient number, since it is larger than the sum of its proper divisors (19579174).

28765946 is a wasteful number, since it uses less digits than its factorization.

28765946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35389.

The product of its digits is 725760, while the sum is 47.

The square root of 28765946 is about 5363.3894134213. The cubic root of 28765946 is about 306.4029109495.

The spelling of 28765946 in words is "twenty-eight million, seven hundred sixty-five thousand, nine hundred forty-six".