2187288 has 48 divisors (see below), whose sum is σ = 6275880. Its totient is φ = 685824.

The previous prime is 2187287. The next prime is 2187293. The reversal of 2187288 is 8827812.

2187288 = T₁₀₇ + T₁₀₈ + ... + T₂₄₂.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

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

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2187287) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 331 + ... + 2117.

2^2187288 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 2187288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3137940).

2187288 is an abundant number, since it is smaller than the sum of its proper divisors (4088592).

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

2187288 is a wasteful number, since it uses less digits than its factorization.

2187288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1816 (or 1809 counting only the distinct ones).

The product of its digits is 14336, while the sum is 36.

The square root of 2187288 is about 1478.9482749576. The cubic root of 2187288 is about 129.8081588537.

The spelling of 2187288 in words is "two million, one hundred eighty-seven thousand, two hundred eighty-eight".