2626440 has 64 divisors (see below), whose sum is σ = 8078400. Its totient is φ = 682752.

The previous prime is 2626433. The next prime is 2626447. The reversal of 2626440 is 446262.

It is an interprime number because it is at equal distance from previous prime (2626433) and next prime (2626447).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 2626440.

It is not an unprimeable number, because it can be changed into a prime (2626447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4906 + ... + 5414.

It is an arithmetic number, because the mean of its divisors is an integer number (126225).

2^2626440 is an apocalyptic number.

2626440 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 2626440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4039200).

2626440 is an abundant number, since it is smaller than the sum of its proper divisors (5451960).

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

2626440 is a wasteful number, since it uses less digits than its factorization.

2626440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 566 (or 562 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 2626440 is about 1620.6295073212. The cubic root of 2626440 is about 137.9714286576.

The spelling of 2626440 in words is "two million, six hundred twenty-six thousand, four hundred forty".