801721230 has 32 divisors (see below), whose sum is σ = 1948492800. Its totient is φ = 211085472.

The previous prime is 801721229. The next prime is 801721237. The reversal of 801721230 is 32127108.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 801721230.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (801721237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 166770 + ... + 171509.

It is an arithmetic number, because the mean of its divisors is an integer number (60890400).

Almost surely, 2^801721230 is an apocalyptic number.

801721230 is an abundant number, since it is smaller than the sum of its proper divisors (1146771570).

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

801721230 is a wasteful number, since it uses less digits than its factorization.

801721230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 338368.

The product of its (nonzero) digits is 672, while the sum is 24.

The square root of 801721230 is about 28314.6822337811. The cubic root of 801721230 is about 928.9830599783.

Adding to 801721230 its reverse (32127108), we get a palindrome (833848338).

The spelling of 801721230 in words is "eight hundred one million, seven hundred twenty-one thousand, two hundred thirty".