28058328 has 24 divisors (see below), whose sum is σ = 75991500. Its totient is φ = 9352752.

The previous prime is 28058311. The next prime is 28058357. The reversal of 28058328 is 82385082.

28058328 is a `hidden beast` number, since 280 + 58 + 328 = 666.

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 28058292 and 28058301.

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 5 ways as a sum of consecutive naturals, for example, 194778 + ... + 194921.

Almost surely, 2^28058328 is an apocalyptic number.

It is an amenable number.

28058328 is an abundant number, since it is smaller than the sum of its proper divisors (47933172).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28058328 is a wasteful number, since it uses less digits than its factorization.

28058328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 389711 (or 389704 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 36.

The square root of 28058328 is about 5297.0112327614. The cubic root of 28058328 is about 303.8696058973.

The spelling of 28058328 in words is "twenty-eight million, fifty-eight thousand, three hundred twenty-eight".