28588716 has 108 divisors (see below), whose sum is σ = 81000192. Its totient is φ = 8491392.

The previous prime is 28588709. The next prime is 28588723. The reversal of 28588716 is 61788582.

It is an interprime number because it is at equal distance from previous prime (28588709) and next prime (28588723).

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 35 ways as a sum of consecutive naturals, for example, 225045 + ... + 225171.

Almost surely, 2^28588716 is an apocalyptic number.

28588716 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 28588716, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40500096).

28588716 is an abundant number, since it is smaller than the sum of its proper divisors (52411476).

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

28588716 is a wasteful number, since it uses less digits than its factorization.

28588716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200 (or 182 counting only the distinct ones).

The product of its digits is 215040, while the sum is 45.

The square root of 28588716 is about 5346.8416845835. The cubic root of 28588716 is about 305.7723540753.

The spelling of 28588716 in words is "twenty-eight million, five hundred eighty-eight thousand, seven hundred sixteen".