28554506 has 8 divisors (see below), whose sum is σ = 42897060. Its totient is φ = 14255488.

The previous prime is 28554497. The next prime is 28554551. The reversal of 28554506 is 60545582.

It can be written as a sum of positive squares in 2 ways, for example, as 16933225 + 11621281 = 4115^2 + 3409^2 .

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

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 3 ways as a sum of consecutive naturals, for example, 9191 + ... + 11898.

Almost surely, 2^28554506 is an apocalyptic number.

28554506 is a deficient number, since it is larger than the sum of its proper divisors (14342554).

28554506 is a wasteful number, since it uses less digits than its factorization.

28554506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21768.

The product of its (nonzero) digits is 48000, while the sum is 35.

The square root of 28554506 is about 5343.6416421762. The cubic root of 28554506 is about 305.6503403476.

The spelling of 28554506 in words is "twenty-eight million, five hundred fifty-four thousand, five hundred six".