2420340 has 96 divisors (see below), whose sum is σ = 7620480. Its totient is φ = 569856.

The previous prime is 2420339. The next prime is 2420371. The reversal of 2420340 is 430242.

It is a happy number.

2420340 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22567 + ... + 22673.

It is an arithmetic number, because the mean of its divisors is an integer number (79380).

2^2420340 is an apocalyptic number.

2420340 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 2420340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3810240).

2420340 is an abundant number, since it is smaller than the sum of its proper divisors (5200140).

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

2420340 is a wasteful number, since it uses less digits than its factorization.

2420340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161 (or 159 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 15.

The square root of 2420340 is about 1555.7441949112. The cubic root of 2420340 is about 134.2637561372.

Adding to 2420340 its reverse (430242), we get a palindrome (2850582).

The spelling of 2420340 in words is "two million, four hundred twenty thousand, three hundred forty".