28563795 has 48 divisors (see below), whose sum is σ = 53831232. Its totient is φ = 13927680.

The previous prime is 28563779. The next prime is 28563809. The reversal of 28563795 is 59736582.

28563795 = T₂₁₅ + T₂₁₆ + ... + T₅₆₅.

It is a happy number.

28563795 is a `hidden beast` number, since 2 + 8 + 5 + 637 + 9 + 5 = 666.

It is not a de Polignac number, because 28563795 - 2⁴ = 28563779 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 28563795.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 91690 + ... + 92000.

It is an arithmetic number, because the mean of its divisors is an integer number (1121484).

Almost surely, 2^28563795 is an apocalyptic number.

28563795 is a deficient number, since it is larger than the sum of its proper divisors (25267437).

28563795 is a wasteful number, since it uses less digits than its factorization.

28563795 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 492 (or 489 counting only the distinct ones).

The product of its digits is 453600, while the sum is 45.

The square root of 28563795 is about 5344.5107353246. The cubic root of 28563795 is about 305.6834802216.

The spelling of 28563795 in words is "twenty-eight million, five hundred sixty-three thousand, seven hundred ninety-five".