2189430 has 96 divisors (see below), whose sum is σ = 6368544. Its totient is φ = 539136.

The previous prime is 2189419. The next prime is 2189459. The reversal of 2189430 is 349812.

2189430 = T₄₉₉ + T₅₀₀ + ... + T₅₁₅.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an alternating number because its digits alternate between even and odd.

It is a junction number, because it is equal to n+sod(n) for n = 2189394 and 2189403.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 41284 + ... + 41336.

It is an arithmetic number, because the mean of its divisors is an integer number (66339).

2^2189430 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2189430, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3184272).

2189430 is an abundant number, since it is smaller than the sum of its proper divisors (4179114).

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

2189430 is a wasteful number, since it uses less digits than its factorization.

2189430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92 (or 80 counting only the distinct ones).

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

The square root of 2189430 is about 1479.6722610092. The cubic root of 2189430 is about 129.8505185188.

The spelling of 2189430 in words is "two million, one hundred eighty-nine thousand, four hundred thirty".