28192545 has 48 divisors (see below), whose sum is σ = 52313040. Its totient is φ = 13996032.

The previous prime is 28192537. The next prime is 28192583. The reversal of 28192545 is 54529182.

28192545 is a `hidden beast` number, since 28 + 1 + 92 + 545 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 567009 + 27625536 = 753^2 + 5256^2 .

It is not a de Polignac number, because 28192545 - 2³ = 28192537 is a prime.

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 47 ways as a sum of consecutive naturals, for example, 104671 + ... + 104939.

It is an arithmetic number, because the mean of its divisors is an integer number (1089855).

Almost surely, 2^28192545 is an apocalyptic number.

It is an amenable number.

28192545 is a deficient number, since it is larger than the sum of its proper divisors (24120495).

28192545 is a wasteful number, since it uses less digits than its factorization.

28192545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 434 (or 431 counting only the distinct ones).

The product of its digits is 28800, while the sum is 36.

The square root of 28192545 is about 5309.6652436853. The cubic root of 28192545 is about 304.3533554201.

The spelling of 28192545 in words is "twenty-eight million, one hundred ninety-two thousand, five hundred forty-five".