28452445 has 32 divisors (see below), whose sum is σ = 40624128. Its totient is φ = 18724608.

The previous prime is 28452439. The next prime is 28452461. The reversal of 28452445 is 54425482.

It is not a de Polignac number, because 28452445 - 2¹³ = 28444253 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 28452445.

It is a congruent number.

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 31 ways as a sum of consecutive naturals, for example, 164379 + ... + 164551.

It is an arithmetic number, because the mean of its divisors is an integer number (1269504).

Almost surely, 2^28452445 is an apocalyptic number.

It is an amenable number.

28452445 is a deficient number, since it is larger than the sum of its proper divisors (12171683).

28452445 is a wasteful number, since it uses less digits than its factorization.

28452445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 349.

The product of its digits is 51200, while the sum is 34.

The square root of 28452445 is about 5334.0833326824. The cubic root of 28452445 is about 305.2857485081.

The spelling of 28452445 in words is "twenty-eight million, four hundred fifty-two thousand, four hundred forty-five".