2423398644 has 72 divisors (see below), whose sum is σ = 6421326912. Its totient is φ = 769749120.

The previous prime is 2423398639. The next prime is 2423398651. The reversal of 2423398644 is 4468933242.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 2423398644.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 44377 + ... + 82559.

It is an arithmetic number, because the mean of its divisors is an integer number (89185096).

Almost surely, 2^2423398644 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2423398644, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3210663456).

2423398644 is an abundant number, since it is smaller than the sum of its proper divisors (3997928268).

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

2423398644 is a wasteful number, since it uses less digits than its factorization.

2423398644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38277 (or 38272 counting only the distinct ones).

The product of its digits is 995328, while the sum is 45.

The square root of 2423398644 is about 49228.0270171373. The cubic root of 2423398644 is about 1343.2028981484.

The spelling of 2423398644 in words is "two billion, four hundred twenty-three million, three hundred ninety-eight thousand, six hundred forty-four".