2444747820 has 24 divisors (see below), whose sum is σ = 6845294064. Its totient is φ = 651932736.

The previous prime is 2444747759. The next prime is 2444747831. The reversal of 2444747820 is 287474442.

2444747820 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20372839 + ... + 20372958.

It is an arithmetic number, because the mean of its divisors is an integer number (285220586).

Almost surely, 2^2444747820 is an apocalyptic number.

2444747820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2444747820 is an abundant number, since it is smaller than the sum of its proper divisors (4400546244).

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

2444747820 is a wasteful number, since it uses less digits than its factorization.

2444747820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40745809 (or 40745807 counting only the distinct ones).

The product of its (nonzero) digits is 401408, while the sum is 42.

The square root of 2444747820 is about 49444.3911884857. The cubic root of 2444747820 is about 1347.1357324523.

The spelling of 2444747820 in words is "two billion, four hundred forty-four million, seven hundred forty-seven thousand, eight hundred twenty".