28818748 has 24 divisors (see below), whose sum is σ = 57794912. Its totient is φ = 12317184.

The previous prime is 28818733. The next prime is 28818749. The reversal of 28818748 is 84781882.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 28818698 and 28818707.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28818749) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10936 + ... + 13312.

Almost surely, 2^28818748 is an apocalyptic number.

28818748 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

28818748 is an abundant number, since it is smaller than the sum of its proper divisors (28976164).

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

28818748 is a wasteful number, since it uses less digits than its factorization.

28818748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2821 (or 2819 counting only the distinct ones).

The product of its digits is 229376, while the sum is 46.

The square root of 28818748 is about 5368.3096035903. The cubic root of 28818748 is about 306.5902713505.

It can be divided in two parts, 2881874 and 8, that added together give a palindrome (2881882).

The spelling of 28818748 in words is "twenty-eight million, eight hundred eighteen thousand, seven hundred forty-eight".