28834945 has 4 divisors (see below), whose sum is σ = 34601940. Its totient is φ = 23067952.

The previous prime is 28834943. The next prime is 28834963. The reversal of 28834945 is 54943882.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7711729 + 21123216 = 2777^2 + 4596^2 .

It is a cyclic number.

It is not a de Polignac number, because 28834945 - 2¹ = 28834943 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28834943) 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, 2883490 + ... + 2883499.

It is an arithmetic number, because the mean of its divisors is an integer number (8650485).

Almost surely, 2^28834945 is an apocalyptic number.

It is an amenable number.

28834945 is a deficient number, since it is larger than the sum of its proper divisors (5766995).

28834945 is an equidigital number, since it uses as much as digits as its factorization.

28834945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5766994.

The product of its digits is 276480, while the sum is 43.

The square root of 28834945 is about 5369.8179671196. The cubic root of 28834945 is about 306.6476982334.

The spelling of 28834945 in words is "twenty-eight million, eight hundred thirty-four thousand, nine hundred forty-five".