28028546 has 32 divisors (see below), whose sum is σ = 54794880. Its totient is φ = 10434816.

The previous prime is 28028537. The next prime is 28028549. The reversal of 28028546 is 64582082.

It is not an unprimeable number, because it can be changed into a prime (28028549) 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, 1436 + ... + 7623.

It is an arithmetic number, because the mean of its divisors is an integer number (1712340).

Almost surely, 2^28028546 is an apocalyptic number.

28028546 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

28028546 is a deficient number, since it is larger than the sum of its proper divisors (26766334).

28028546 is a wasteful number, since it uses less digits than its factorization.

28028546 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9098.

The product of its (nonzero) digits is 30720, while the sum is 35.

The square root of 28028546 is about 5294.1992784556. The cubic root of 28028546 is about 303.7620555541.

The spelling of 28028546 in words is "twenty-eight million, twenty-eight thousand, five hundred forty-six".