28735930 has 16 divisors (see below), whose sum is σ = 51956640. Its totient is φ = 11442832.

The previous prime is 28735921. The next prime is 28735943. The reversal of 28735930 is 3953782.

It is a self number, because there is not a number n which added to its sum of digits gives 28735930.

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, 4060 + ... + 8599.

It is an arithmetic number, because the mean of its divisors is an integer number (3247290).

Almost surely, 2^28735930 is an apocalyptic number.

28735930 is a deficient number, since it is larger than the sum of its proper divisors (23220710).

28735930 is a wasteful number, since it uses less digits than its factorization.

28735930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12893.

The product of its (nonzero) digits is 45360, while the sum is 37.

The square root of 28735930 is about 5360.5904525528. The cubic root of 28735930 is about 306.2963012044.

The spelling of 28735930 in words is "twenty-eight million, seven hundred thirty-five thousand, nine hundred thirty".