2189340 has 36 divisors (see below), whose sum is σ = 6641544. Its totient is φ = 583776.

The previous prime is 2189339. The next prime is 2189357. The reversal of 2189340 is 439812.

2189340 = T₂₀ + T₂₁ + ... + T₂₃₅.

It is a tau number, because it is divible by the number of its divisors (36).

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, 5902 + ... + 6261.

2^2189340 is an apocalyptic number.

2189340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2189340 is an abundant number, since it is smaller than the sum of its proper divisors (4452204).

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

2189340 is a wasteful number, since it uses less digits than its factorization.

2189340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12178 (or 12173 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 2189340 is about 1479.6418485566. The cubic root of 2189340 is about 129.8487392571.

The spelling of 2189340 in words is "two million, one hundred eighty-nine thousand, three hundred forty".