2420644438 has 8 divisors (see below), whose sum is σ = 3631641120. Its totient is φ = 1210097400.

The previous prime is 2420644427. The next prime is 2420644439. The reversal of 2420644438 is 8344460242.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 2420644397 and 2420644406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2420644439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 98613 + ... + 120688.

It is an arithmetic number, because the mean of its divisors is an integer number (453955140).

Almost surely, 2^2420644438 is an apocalyptic number.

2420644438 is a deficient number, since it is larger than the sum of its proper divisors (1210996682).

2420644438 is a wasteful number, since it uses less digits than its factorization.

2420644438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224822.

The product of its (nonzero) digits is 147456, while the sum is 37.

The square root of 2420644438 is about 49200.0451016053. The cubic root of 2420644438 is about 1342.6938527408.

It can be divided in two parts, 24206 and 44438, that added together give a square (68644 = 262²).

The spelling of 2420644438 in words is "two billion, four hundred twenty million, six hundred forty-four thousand, four hundred thirty-eight".