28351345 has 16 divisors (see below), whose sum is σ = 37293120. Its totient is φ = 20520000.

The previous prime is 28351339. The next prime is 28351373. The reversal of 28351345 is 54315382.

It is not a de Polignac number, because 28351345 - 2⁵ = 28351313 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11470 + ... + 13720.

It is an arithmetic number, because the mean of its divisors is an integer number (2330820).

Almost surely, 2^28351345 is an apocalyptic number.

It is an amenable number.

28351345 is a deficient number, since it is larger than the sum of its proper divisors (8941775).

28351345 is a wasteful number, since it uses less digits than its factorization.

28351345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2496.

The product of its digits is 14400, while the sum is 31.

The square root of 28351345 is about 5324.5981068997. The cubic root of 28351345 is about 304.9237290250.

The spelling of 28351345 in words is "twenty-eight million, three hundred fifty-one thousand, three hundred forty-five".