28184963 has 4 divisors (see below), whose sum is σ = 29842920. Its totient is φ = 26527008.

The previous prime is 28184951. The next prime is 28184969. The reversal of 28184963 is 36948182.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 36948182 = 2 ⋅18474091.

It is a cyclic number.

It is not a de Polignac number, because 28184963 - 2⁶ = 28184899 is a prime.

It is a super-2 number, since 2×28184963² = 1588784278622738, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 28184963.

It is not an unprimeable number, because it can be changed into a prime (28184969) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 828953 + ... + 828986.

It is an arithmetic number, because the mean of its divisors is an integer number (7460730).

Almost surely, 2^28184963 is an apocalyptic number.

28184963 is a deficient number, since it is larger than the sum of its proper divisors (1657957).

28184963 is a wasteful number, since it uses less digits than its factorization.

28184963 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1657956.

The product of its digits is 82944, while the sum is 41.

The square root of 28184963 is about 5308.9512146939. The cubic root of 28184963 is about 304.3260690809.

The spelling of 28184963 in words is "twenty-eight million, one hundred eighty-four thousand, nine hundred sixty-three".