28078963 has 16 divisors (see below), whose sum is σ = 32117760. Its totient is φ = 24314400.

The previous prime is 28078943. The next prime is 28078987. The reversal of 28078963 is 36987082.

It is not a de Polignac number, because 28078963 - 2¹⁷ = 27947891 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28078943) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22233 + ... + 23461.

It is an arithmetic number, because the mean of its divisors is an integer number (2007360).

Almost surely, 2^28078963 is an apocalyptic number.

28078963 is a deficient number, since it is larger than the sum of its proper divisors (4038797).

28078963 is a wasteful number, since it uses less digits than its factorization.

28078963 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1338.

The product of its (nonzero) digits is 145152, while the sum is 43.

The square root of 28078963 is about 5298.9586712863. The cubic root of 28078963 is about 303.9440794821.

The spelling of 28078963 in words is "twenty-eight million, seventy-eight thousand, nine hundred sixty-three".