2620423 has 12 divisors (see below), whose sum is σ = 2999640. Its totient is φ = 2269296.

The previous prime is 2620421. The next prime is 2620439. The reversal of 2620423 is 3240262.

It is not a de Polignac number, because 2620423 - 2¹ = 2620421 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is an Ulam number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2620423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2620421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25390 + ... + 25492.

It is an arithmetic number, because the mean of its divisors is an integer number (249970).

2^2620423 is an apocalyptic number.

2620423 is a deficient number, since it is larger than the sum of its proper divisors (379217).

2620423 is a wasteful number, since it uses less digits than its factorization.

2620423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238 (or 135 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 2620423 is about 1618.7720654867. The cubic root of 2620423 is about 137.8659869631.

Adding to 2620423 its reverse (3240262), we get a palindrome (5860685).

It can be divided in two parts, 26 and 20423, that added together give a square (20449 = 143²).

The spelling of 2620423 in words is "two million, six hundred twenty thousand, four hundred twenty-three".