28836368 has 40 divisors (see below), whose sum is σ = 62004960. Its totient is φ = 12880640.

The previous prime is 28836361. The next prime is 28836383. The reversal of 28836368 is 86363882.

It is a super-2 number, since 2×28836368² = 1663072238862848, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is not an unprimeable number, because it can be changed into a prime (28836361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8996 + ... + 11772.

It is an arithmetic number, because the mean of its divisors is an integer number (1550124).

Almost surely, 2^28836368 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28836368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31002480).

28836368 is an abundant number, since it is smaller than the sum of its proper divisors (33168592).

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

28836368 is a wasteful number, since it uses less digits than its factorization.

28836368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2855 (or 2849 counting only the distinct ones).

The product of its digits is 331776, while the sum is 44.

The square root of 28836368 is about 5369.9504653209. The cubic root of 28836368 is about 306.6527424890.

The spelling of 28836368 in words is "twenty-eight million, eight hundred thirty-six thousand, three hundred sixty-eight".