234630721 has 16 divisors (see below), whose sum is σ = 260031744. Its totient is φ = 210351744.

The previous prime is 234630713. The next prime is 234630757. The reversal of 234630721 is 127036432.

It is a cyclic number.

It is not a de Polignac number, because 234630721 - 2³ = 234630713 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 234630721.

It is not an unprimeable number, because it can be changed into a prime (234630761) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 82306 + ... + 85108.

It is an arithmetic number, because the mean of its divisors is an integer number (16251984).

Almost surely, 2^234630721 is an apocalyptic number.

It is an amenable number.

234630721 is a deficient number, since it is larger than the sum of its proper divisors (25401023).

234630721 is a wasteful number, since it uses less digits than its factorization.

234630721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3000.

The product of its (nonzero) digits is 6048, while the sum is 28.

The square root of 234630721 is about 15317.6604284075. The cubic root of 234630721 is about 616.7771725346. Note that the first 3 decimals are identical.

The spelling of 234630721 in words is "two hundred thirty-four million, six hundred thirty thousand, seven hundred twenty-one".