2388816 has 60 divisors (see below), whose sum is σ = 6833268. Its totient is φ = 778752.

The previous prime is 2388797. The next prime is 2388833. The reversal of 2388816 is 6188832.

It can be written as a sum of positive squares in 2 ways, for example, as 646416 + 1742400 = 804^2 + 1320^2 .

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

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7476 + ... + 7788.

2^2388816 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 2388816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3416634).

2388816 is an abundant number, since it is smaller than the sum of its proper divisors (4444452).

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

2388816 is a wasteful number, since it uses less digits than its factorization.

2388816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 380 (or 371 counting only the distinct ones).

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

The square root of 2388816 is about 1545.5795029697. The cubic root of 2388816 is about 133.6782956268.

The spelling of 2388816 in words is "two million, three hundred eighty-eight thousand, eight hundred sixteen".