28354445 has 16 divisors (see below), whose sum is σ = 38985600. Its totient is φ = 19393344.

The previous prime is 28354439. The next prime is 28354451. The reversal of 28354445 is 54445382.

It is an interprime number because it is at equal distance from previous prime (28354439) and next prime (28354451).

It is a cyclic number.

It is not a de Polignac number, because 28354445 - 2⁸ = 28354189 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

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 15 ways as a sum of consecutive naturals, for example, 17531 + ... + 19079.

It is an arithmetic number, because the mean of its divisors is an integer number (2436600).

Almost surely, 2^28354445 is an apocalyptic number.

It is an amenable number.

28354445 is a deficient number, since it is larger than the sum of its proper divisors (10631155).

28354445 is a wasteful number, since it uses less digits than its factorization.

28354445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2084.

The product of its digits is 76800, while the sum is 35.

The square root of 28354445 is about 5324.8892007252. The cubic root of 28354445 is about 304.9348423027.

The spelling of 28354445 in words is "twenty-eight million, three hundred fifty-four thousand, four hundred forty-five".