28773146 has 16 divisors (see below), whose sum is σ = 47174400. Its totient is φ = 13103040.

The previous prime is 28773137. The next prime is 28773181. The reversal of 28773146 is 64137782.

It is a super-3 number, since 3×28773146³ (a number of 23 digits) contains 333 as substring.

It is an unprimeable number.

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, 12596 + ... + 14703.

It is an arithmetic number, because the mean of its divisors is an integer number (2948400).

Almost surely, 2^28773146 is an apocalyptic number.

28773146 is a deficient number, since it is larger than the sum of its proper divisors (18401254).

28773146 is a wasteful number, since it uses less digits than its factorization.

28773146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27349.

The product of its digits is 56448, while the sum is 38.

The square root of 28773146 is about 5364.0605887704. The cubic root of 28773146 is about 306.4284726203.

The spelling of 28773146 in words is "twenty-eight million, seven hundred seventy-three thousand, one hundred forty-six".