2194380 has 72 divisors (see below), whose sum is σ = 6787872. Its totient is φ = 573696.

The previous prime is 2194369. The next prime is 2194391. The reversal of 2194380 is 834912.

2194380 = 21² + 22² + ... + 187².

It is an interprime number because it is at equal distance from previous prime (2194369) and next prime (2194391).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13057 + ... + 13223.

It is an arithmetic number, because the mean of its divisors is an integer number (94276).

2^2194380 is an apocalyptic number.

2194380 is a gapful number since it is divisible by the number (20) 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 2194380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3393936).

2194380 is an abundant number, since it is smaller than the sum of its proper divisors (4593492).

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

2194380 is a wasteful number, since it uses less digits than its factorization.

2194380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255 (or 250 counting only the distinct ones).

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

The square root of 2194380 is about 1481.3439843601. The cubic root of 2194380 is about 129.9483029158.

The spelling of 2194380 in words is "two million, one hundred ninety-four thousand, three hundred eighty".