28542845 has 16 divisors (see below), whose sum is σ = 36416640. Its totient is φ = 21415104.

The previous prime is 28542821. The next prime is 28542851. The reversal of 28542845 is 54824582.

It is a cyclic number.

It is not a de Polignac number, because 28542845 - 2¹⁴ = 28526461 is a prime.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 28542799 and 28542808.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8327 + ... + 11243.

It is an arithmetic number, because the mean of its divisors is an integer number (2276040).

Almost surely, 2^28542845 is an apocalyptic number.

It is an amenable number.

28542845 is a deficient number, since it is larger than the sum of its proper divisors (7873795).

28542845 is a wasteful number, since it uses less digits than its factorization.

28542845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3044.

The product of its digits is 102400, while the sum is 38.

The square root of 28542845 is about 5342.5504209132. The cubic root of 28542845 is about 305.6087278386.

The spelling of 28542845 in words is "twenty-eight million, five hundred forty-two thousand, eight hundred forty-five".