28097546 has 8 divisors (see below), whose sum is σ = 43174404. Its totient is φ = 13706080.

The previous prime is 28097539. The next prime is 28097591. The reversal of 28097546 is 64579082.

It can be written as a sum of positive squares in 2 ways, for example, as 25391521 + 2706025 = 5039^2 + 1645^2 .

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

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 171245 + ... + 171408.

Almost surely, 2^28097546 is an apocalyptic number.

28097546 is a deficient number, since it is larger than the sum of its proper divisors (15076858).

28097546 is a wasteful number, since it uses less digits than its factorization.

28097546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 342696.

The product of its (nonzero) digits is 120960, while the sum is 41.

The square root of 28097546 is about 5300.7118389892. The cubic root of 28097546 is about 304.0111159947.

The spelling of 28097546 in words is "twenty-eight million, ninety-seven thousand, five hundred forty-six".