2918240 has 96 divisors (see below), whose sum is σ = 7874496. Its totient is φ = 1013760.

The previous prime is 2918239. The next prime is 2918249. The reversal of 2918240 is 428192.

2918240 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×2918240² = 17032249395200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2918249) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47810 + ... + 47870.

It is an arithmetic number, because the mean of its divisors is an integer number (82026).

2^2918240 is an apocalyptic number.

2918240 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 2918240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3937248).

2918240 is an abundant number, since it is smaller than the sum of its proper divisors (4956256).

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

2918240 is a wasteful number, since it uses less digits than its factorization.

2918240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112 (or 104 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 2918240 is about 1708.2856903926. The cubic root of 2918240 is about 142.9026673958.

The spelling of 2918240 in words is "two million, nine hundred eighteen thousand, two hundred forty".