28383861 has 8 divisors (see below), whose sum is σ = 41285664. Its totient is φ = 17202320.

The previous prime is 28383857. The next prime is 28383871. The reversal of 28383861 is 16838382.

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

It is a cyclic number.

It is not a de Polignac number, because 28383861 - 2² = 28383857 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28383811) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 430026 + ... + 430091.

It is an arithmetic number, because the mean of its divisors is an integer number (5160708).

Almost surely, 2^28383861 is an apocalyptic number.

It is an amenable number.

28383861 is a deficient number, since it is larger than the sum of its proper divisors (12901803).

28383861 is a wasteful number, since it uses less digits than its factorization.

28383861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 860131.

The product of its digits is 55296, while the sum is 39.

The square root of 28383861 is about 5327.6506079134. The cubic root of 28383861 is about 305.0402562649.

The spelling of 28383861 in words is "twenty-eight million, three hundred eighty-three thousand, eight hundred sixty-one".