2302740 has 72 divisors (see below), whose sum is σ = 7626528. Its totient is φ = 557760.

The previous prime is 2302717. The next prime is 2302753. The reversal of 2302740 is 472032.

2302740 = 177² + 178² + ... + 231².

It is a happy number.

It is a super-2 number, since 2×2302740² = 10605223015200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

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, 1399 + ... + 2561.

It is an arithmetic number, because the mean of its divisors is an integer number (105924).

2^2302740 is an apocalyptic number.

2302740 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 2302740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3813264).

2302740 is an abundant number, since it is smaller than the sum of its proper divisors (5323788).

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

2302740 is a wasteful number, since it uses less digits than its factorization.

2302740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1189 (or 1184 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 18.

The square root of 2302740 is about 1517.4781711774. The cubic root of 2302740 is about 132.0530090126.

Adding to 2302740 its reverse (472032), we get a palindrome (2774772).

The spelling of 2302740 in words is "two million, three hundred two thousand, seven hundred forty".