28116946 has 32 divisors (see below), whose sum is σ = 52472448. Its totient is φ = 11101440.

The previous prime is 28116943. The next prime is 28116953. The reversal of 28116946 is 64961182.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (28116943) 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 15 ways as a sum of consecutive naturals, for example, 1971 + ... + 7753.

It is an arithmetic number, because the mean of its divisors is an integer number (1639764).

Almost surely, 2^28116946 is an apocalyptic number.

28116946 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

28116946 is a deficient number, since it is larger than the sum of its proper divisors (24355502).

28116946 is a wasteful number, since it uses less digits than its factorization.

28116946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5826.

The product of its digits is 20736, while the sum is 37.

The square root of 28116946 is about 5302.5414661274. The cubic root of 28116946 is about 304.0810682340.

The spelling of 28116946 in words is "twenty-eight million, one hundred sixteen thousand, nine hundred forty-six".