28829345 has 4 divisors (see below), whose sum is σ = 34595220. Its totient is φ = 23063472.

The previous prime is 28829299. The next prime is 28829357. The reversal of 28829345 is 54392882.

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 14684224 + 14145121 = 3832^2 + 3761^2 .

It is a cyclic number.

It is not a de Polignac number, because 28829345 - 2⁸ = 28829089 is a prime.

It is a super-2 number, since 2×28829345² = 1662262266258050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2882930 + ... + 2882939.

It is an arithmetic number, because the mean of its divisors is an integer number (8648805).

Almost surely, 2^28829345 is an apocalyptic number.

It is an amenable number.

28829345 is a deficient number, since it is larger than the sum of its proper divisors (5765875).

28829345 is an equidigital number, since it uses as much as digits as its factorization.

28829345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5765874.

The product of its digits is 138240, while the sum is 41.

The square root of 28829345 is about 5369.2965088548. The cubic root of 28829345 is about 306.6278457212.

The spelling of 28829345 in words is "twenty-eight million, eight hundred twenty-nine thousand, three hundred forty-five".