18828744 has 64 divisors (see below), whose sum is σ = 52107840. Its totient is φ = 5621760.

The previous prime is 18828737. The next prime is 18828757. The reversal of 18828744 is 44782881.

It is a junction number, because it is equal to n+sod(n) for n = 18828696 and 18828705.

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 15 ways as a sum of consecutive naturals, for example, 18784 + ... + 19760.

It is an arithmetic number, because the mean of its divisors is an integer number (814185).

Almost surely, 2^18828744 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 18828744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26053920).

18828744 is an abundant number, since it is smaller than the sum of its proper divisors (33279096).

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

18828744 is a wasteful number, since it uses less digits than its factorization.

18828744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1070 (or 1066 counting only the distinct ones).

The product of its digits is 114688, while the sum is 42.

The square root of 18828744 is about 4339.2100663600. The cubic root of 18828744 is about 266.0360250453.

The spelling of 18828744 in words is "eighteen million, eight hundred twenty-eight thousand, seven hundred forty-four".