2113440 has 192 divisors, whose sum is σ = 8273664. Its totient is φ = 442368.

The previous prime is 2113421. The next prime is 2113451. The reversal of 2113440 is 443112.

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

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, 57102 + ... + 57138.

It is an arithmetic number, because the mean of its divisors is an integer number (43092).

2^2113440 is an apocalyptic number.

2113440 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 2113440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4136832).

2113440 is an abundant number, since it is smaller than the sum of its proper divisors (6160224).

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

2113440 is a wasteful number, since it uses less digits than its factorization.

2113440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79 (or 71 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 2113440 is about 1453.7675192410. The cubic root of 2113440 is about 128.3305259782.

Adding to 2113440 its reverse (443112), we get a palindrome (2556552).

The spelling of 2113440 in words is "two million, one hundred thirteen thousand, four hundred forty".