28953288 has 160 divisors (see below), whose sum is σ = 100013760. Its totient is φ = 7620480.

The previous prime is 28953271. The next prime is 28953289. The reversal of 28953288 is 88235982.

It is not an unprimeable number, because it can be changed into a prime (28953289) by changing a digit.

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 39 ways as a sum of consecutive naturals, for example, 58723 + ... + 59213.

It is an arithmetic number, because the mean of its divisors is an integer number (625086).

Almost surely, 2^28953288 is an apocalyptic number.

28953288 is a gapful number since it is divisible by the number (28) 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 28953288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (50006880).

28953288 is an abundant number, since it is smaller than the sum of its proper divisors (71060472).

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

28953288 is a wasteful number, since it uses less digits than its factorization.

28953288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 529 (or 516 counting only the distinct ones).

The product of its digits is 276480, while the sum is 45.

The square root of 28953288 is about 5380.8259589026. The cubic root of 28953288 is about 307.0666352259.

It can be divided in two parts, 28953 and 288, that added together give a square (29241 = 171²).

The spelling of 28953288 in words is "twenty-eight million, nine hundred fifty-three thousand, two hundred eighty-eight".