28579356 has 72 divisors (see below), whose sum is σ = 78886080. Its totient is φ = 8671104.

The previous prime is 28579351. The next prime is 28579361. The reversal of 28579356 is 65397582.

It is a happy number.

28579356 is a `hidden beast` number, since 28 + 579 + 3 + 56 = 666.

It is an interprime number because it is at equal distance from previous prime (28579351) and next prime (28579361).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28579351) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 36586 + ... + 37358.

It is an arithmetic number, because the mean of its divisors is an integer number (1095640).

Almost surely, 2^28579356 is an apocalyptic number.

28579356 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28579356, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39443040).

28579356 is an abundant number, since it is smaller than the sum of its proper divisors (50306724).

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

28579356 is a wasteful number, since it uses less digits than its factorization.

28579356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 875 (or 870 counting only the distinct ones).

The product of its digits is 453600, while the sum is 45.

The square root of 28579356 is about 5345.9663298603. The cubic root of 28579356 is about 305.7389802827.

The spelling of 28579356 in words is "twenty-eight million, five hundred seventy-nine thousand, three hundred fifty-six".