2247740 has 48 divisors (see below), whose sum is σ = 5461344. Its totient is φ = 768000.

The previous prime is 2247737. The next prime is 2247793. The reversal of 2247740 is 477422.

It is a Smith number, since the sum of its digits (26) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3440 + ... + 4040.

It is an arithmetic number, because the mean of its divisors is an integer number (113778).

2^2247740 is an apocalyptic number.

2247740 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 2247740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2730672).

2247740 is an abundant number, since it is smaller than the sum of its proper divisors (3213604).

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

2247740 is a wasteful number, since it uses less digits than its factorization.

2247740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 638 (or 636 counting only the distinct ones).

The product of its (nonzero) digits is 3136, while the sum is 26.

The square root of 2247740 is about 1499.2464774012. The cubic root of 2247740 is about 130.9931818606.

It can be divided in two parts, 2 and 247740, that added together give a palindrome (247742).

The spelling of 2247740 in words is "two million, two hundred forty-seven thousand, seven hundred forty".