2428222729 has 3 divisors (see below), whose sum is σ = 2428272007. Its totient is φ = 2428173452.

The previous prime is 2428222697. The next prime is 2428222807. The reversal of 2428222729 is 9272228242.

The square root of 2428222729 is 49277.

It is a perfect power (a square), and thus also a powerful number.

2428222729 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 1790559225 + 637663504 = 42315^2 + 25252^2 .

It is not a de Polignac number, because 2428222729 - 2⁵ = 2428222697 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2428222691 and 2428222700.

It is not an unprimeable number, because it can be changed into a prime (2428222129) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 24639 + ... + 73915.

Almost surely, 2^2428222729 is an apocalyptic number.

2428222729 is the 49277-th square number.

2428222729 is the 24639-th centered octagonal number.

It is an amenable number.

2428222729 is a deficient number, since it is larger than the sum of its proper divisors (49278).

2428222729 is an frugal number, since it uses more digits than its factorization.

2428222729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98554 (or 49277 counting only the distinct ones).

The product of its digits is 129024, while the sum is 40.

The cubic root of 2428222729 is about 1344.0935798010.

The spelling of 2428222729 in words is "two billion, four hundred twenty-eight million, two hundred twenty-two thousand, seven hundred twenty-nine".