28204766 has 8 divisors (see below), whose sum is σ = 42452424. Its totient is φ = 14053960.

The previous prime is 28204741. The next prime is 28204777. The reversal of 28204766 is 66740282.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×28204766² = 1591017650229512, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23480 + ... + 24651.

It is an arithmetic number, because the mean of its divisors is an integer number (5306553).

Almost surely, 2^28204766 is an apocalyptic number.

28204766 is a deficient number, since it is larger than the sum of its proper divisors (14247658).

28204766 is a wasteful number, since it uses less digits than its factorization.

28204766 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48426.

The product of its (nonzero) digits is 32256, while the sum is 35.

The square root of 28204766 is about 5310.8159448431. The cubic root of 28204766 is about 304.3973264420.

The spelling of 28204766 in words is "twenty-eight million, two hundred four thousand, seven hundred sixty-six".