2188472 has 32 divisors (see below), whose sum is σ = 4823280. Its totient is φ = 917760.

The previous prime is 2188463. The next prime is 2188481. The reversal of 2188472 is 2748812.

Added to its reverse (2748812) it gives a square (4937284 = 2222²).

It is an interprime number because it is at equal distance from previous prime (2188463) and next prime (2188481).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 188 + ... + 2100.

2^2188472 is an apocalyptic number.

2188472 is a gapful number since it is divisible by the number (22) 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 2188472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2411640).

2188472 is an abundant number, since it is smaller than the sum of its proper divisors (2634808).

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

2188472 is a wasteful number, since it uses less digits than its factorization.

2188472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1943 (or 1939 counting only the distinct ones).

The product of its digits is 7168, while the sum is 32.

The square root of 2188472 is about 1479.3485052549. The cubic root of 2188472 is about 129.8315767631.

Adding to 2188472 its reverse (2748812), we get a square (4937284 = 2222²).

The spelling of 2188472 in words is "two million, one hundred eighty-eight thousand, four hundred seventy-two".