28904854 has 8 divisors (see below), whose sum is σ = 47298888. Its totient is φ = 13138560.

The previous prime is 28904849. The next prime is 28904891. The reversal of 28904854 is 45840982.

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

It is a super-2 number, since 2×28904854² = 1670981169522632, 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 (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 656907 + ... + 656950.

It is an arithmetic number, because the mean of its divisors is an integer number (5912361).

Almost surely, 2^28904854 is an apocalyptic number.

28904854 is a deficient number, since it is larger than the sum of its proper divisors (18394034).

28904854 is a wasteful number, since it uses less digits than its factorization.

28904854 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1313870.

The product of its (nonzero) digits is 92160, while the sum is 40.

The square root of 28904854 is about 5376.3234649712. The cubic root of 28904854 is about 306.8953159826.

It can be divided in two parts, 2890 and 4854, that added together give a square (7744 = 88²).

The spelling of 28904854 in words is "twenty-eight million, nine hundred four thousand, eight hundred fifty-four".