2194740 has 72 divisors (see below), whose sum is σ = 6781320. Its totient is φ = 574464.

The previous prime is 2194739. The next prime is 2194757. The reversal of 2194740 is 474912.

It is a happy number.

2194740 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 86436 + 2108304 = 294^2 + 1452^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15952 + ... + 16088.

It is an arithmetic number, because the mean of its divisors is an integer number (94185).

2^2194740 is an apocalyptic number.

2194740 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 2194740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3390660).

2194740 is an abundant number, since it is smaller than the sum of its proper divisors (4586580).

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

2194740 is a wasteful number, since it uses less digits than its factorization.

2194740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 241 (or 236 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 2194740 is about 1481.4654906544. The cubic root of 2194740 is about 129.9554087697.

The spelling of 2194740 in words is "two million, one hundred ninety-four thousand, seven hundred forty".