28818036 has 72 divisors (see below), whose sum is σ = 79191840. Its totient is φ = 8783424.

The previous prime is 28818029. The next prime is 28818037. The reversal of 28818036 is 63081882.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28818037) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 64831 + ... + 65273.

Almost surely, 2^28818036 is an apocalyptic number.

28818036 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 28818036, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39595920).

28818036 is an abundant number, since it is smaller than the sum of its proper divisors (50373804).

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

28818036 is a wasteful number, since it uses less digits than its factorization.

28818036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 605 (or 600 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 36.

The square root of 28818036 is about 5368.2432880785. The cubic root of 28818036 is about 306.5877464424.

The spelling of 28818036 in words is "twenty-eight million, eight hundred eighteen thousand, thirty-six".