2623720 has 64 divisors (see below), whose sum is σ = 6609600. Its totient is φ = 929280.

The previous prime is 2623711. The next prime is 2623721. The reversal of 2623720 is 273262.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a d-powerful number, because it can be written as 2¹¹ + 6³ + 2¹⁹ + 3² + 7 + 2²¹ + 0 .

It is a junction number, because it is equal to n+sod(n) for n = 2623691 and 2623700.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2623721) 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, 29436 + ... + 29524.

It is an arithmetic number, because the mean of its divisors is an integer number (103275).

2^2623720 is an apocalyptic number.

2623720 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 2623720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3304800).

2623720 is an abundant number, since it is smaller than the sum of its proper divisors (3985880).

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

2623720 is a wasteful number, since it uses less digits than its factorization.

2623720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178 (or 174 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 22.

The square root of 2623720 is about 1619.7901098599. The cubic root of 2623720 is about 137.9237834407.

Adding to 2623720 its reverse (273262), we get a palindrome (2896982).

The spelling of 2623720 in words is "two million, six hundred twenty-three thousand, seven hundred twenty".