2274640 has 20 divisors (see below), whose sum is σ = 5288724. Its totient is φ = 909824.

The previous prime is 2274599. The next prime is 2274641. The reversal of 2274640 is 464722.

It can be written as a sum of positive squares in 2 ways, for example, as 853776 + 1420864 = 924^2 + 1192^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2274641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14137 + ... + 14296.

2^2274640 is an apocalyptic number.

2274640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2274640 is an abundant number, since it is smaller than the sum of its proper divisors (3014084).

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

2274640 is a wasteful number, since it uses less digits than its factorization.

2274640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28446 (or 28440 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 25.

The square root of 2274640 is about 1508.1909693404. The cubic root of 2274640 is about 131.5136679977.

The spelling of 2274640 in words is "two million, two hundred seventy-four thousand, six hundred forty".