28229545 has 8 divisors (see below), whose sum is σ = 34284096. Its totient is φ = 22311216.

The previous prime is 28229527. The next prime is 28229567. The reversal of 28229545 is 54592282.

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

It is a cyclic number.

It is not a de Polignac number, because 28229545 - 2¹³ = 28221353 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33597 + ... + 34426.

It is an arithmetic number, because the mean of its divisors is an integer number (4285512).

Almost surely, 2^28229545 is an apocalyptic number.

It is an amenable number.

28229545 is a deficient number, since it is larger than the sum of its proper divisors (6054551).

28229545 is an equidigital number, since it uses as much as digits as its factorization.

28229545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68111.

The product of its digits is 57600, while the sum is 37.

The square root of 28229545 is about 5313.1483133826. The cubic root of 28229545 is about 304.4864420379.

The spelling of 28229545 in words is "twenty-eight million, two hundred twenty-nine thousand, five hundred forty-five".