28904486 has 8 divisors (see below), whose sum is σ = 46691904. Its totient is φ = 13340520.

The previous prime is 28904443. The next prime is 28904521. The reversal of 28904486 is 68440982.

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

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 555830 + ... + 555881.

It is an arithmetic number, because the mean of its divisors is an integer number (5836488).

Almost surely, 2^28904486 is an apocalyptic number.

28904486 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

28904486 is a deficient number, since it is larger than the sum of its proper divisors (17787418).

28904486 is a wasteful number, since it uses less digits than its factorization.

28904486 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1111726.

The product of its (nonzero) digits is 110592, while the sum is 41.

The square root of 28904486 is about 5376.2892407310. The cubic root of 28904486 is about 306.8940135721.

The spelling of 28904486 in words is "twenty-eight million, nine hundred four thousand, four hundred eighty-six".