2228973729 has 8 divisors (see below), whose sum is σ = 2972437920. Its totient is φ = 1485746016.

The previous prime is 2228973713. The next prime is 2228973739. The reversal of 2228973729 is 9273798222.

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

It is not a de Polignac number, because 2228973729 - 2⁴ = 2228973713 is a prime.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (2228973709) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35812 + ... + 75765.

It is an arithmetic number, because the mean of its divisors is an integer number (371554740).

Almost surely, 2^2228973729 is an apocalyptic number.

It is an amenable number.

2228973729 is a deficient number, since it is larger than the sum of its proper divisors (743464191).

2228973729 is a wasteful number, since it uses less digits than its factorization.

2228973729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118239.

The product of its digits is 1524096, while the sum is 51.

The square root of 2228973729 is about 47212.0083135636. The cubic root of 2228973729 is about 1306.2761070338.

The spelling of 2228973729 in words is "two billion, two hundred twenty-eight million, nine hundred seventy-three thousand, seven hundred twenty-nine".