212744729 has 8 divisors (see below), whose sum is σ = 224316000. Its totient is φ = 201210912.

The previous prime is 212744717. The next prime is 212744743. The reversal of 212744729 is 927447212.

212744729 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 212744729 - 2⁴ = 212744713 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212744692 and 212744701.

It is not an unprimeable number, because it can be changed into a prime (212744789) 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, 2717 + ... + 20805.

It is an arithmetic number, because the mean of its divisors is an integer number (28039500).

Almost surely, 2^212744729 is an apocalyptic number.

It is an amenable number.

212744729 is a deficient number, since it is larger than the sum of its proper divisors (11571271).

212744729 is a wasteful number, since it uses less digits than its factorization.

212744729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18727.

The product of its digits is 56448, while the sum is 38.

The square root of 212744729 is about 14585.7714571427. The cubic root of 212744729 is about 596.9705903900.

The spelling of 212744729 in words is "two hundred twelve million, seven hundred forty-four thousand, seven hundred twenty-nine".