28805746 has 8 divisors (see below), whose sum is σ = 43274844. Its totient is φ = 14380800.

The previous prime is 28805741. The next prime is 28805761. The reversal of 28805746 is 64750882.

It can be written as a sum of positive squares in 2 ways, for example, as 27154521 + 1651225 = 5211^2 + 1285^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 28805699 and 28805708.

It is not an unprimeable number, because it can be changed into a prime (28805741) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9355 + ... + 12046.

Almost surely, 2^28805746 is an apocalyptic number.

28805746 is a deficient number, since it is larger than the sum of its proper divisors (14469098).

28805746 is a wasteful number, since it uses less digits than its factorization.

28805746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22076.

The product of its (nonzero) digits is 107520, while the sum is 40.

The square root of 28805746 is about 5367.0984712412. The cubic root of 28805746 is about 306.5441568519.

The spelling of 28805746 in words is "twenty-eight million, eight hundred five thousand, seven hundred forty-six".