2421820726 has 16 divisors (see below), whose sum is σ = 3970565424. Its totient is φ = 1101079584.

The previous prime is 2421820717. The next prime is 2421820757. The reversal of 2421820726 is 6270281242.

It is a junction number, because it is equal to n+sod(n) for n = 2421820691 and 2421820700.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 693385 + ... + 696868.

It is an arithmetic number, because the mean of its divisors is an integer number (248160339).

Almost surely, 2^2421820726 is an apocalyptic number.

2421820726 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

2421820726 is a deficient number, since it is larger than the sum of its proper divisors (1548744698).

2421820726 is a wasteful number, since it uses less digits than its factorization.

2421820726 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1390335.

The product of its (nonzero) digits is 21504, while the sum is 34.

The square root of 2421820726 is about 49211.9977850930. The cubic root of 2421820726 is about 1342.9113070793.

It can be divided in two parts, 24218 and 20726, that added together give a palindrome (44944).

The spelling of 2421820726 in words is "two billion, four hundred twenty-one million, eight hundred twenty thousand, seven hundred twenty-six".