721741424 has 10 divisors (see below), whose sum is σ = 1398374040. Its totient is φ = 360870704.

The previous prime is 721741417. The next prime is 721741451. The reversal of 721741424 is 424147127.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22554404 + ... + 22554435.

It is an arithmetic number, because the mean of its divisors is an integer number (139837404).

Almost surely, 2^721741424 is an apocalyptic number.

It is an amenable number.

721741424 is a deficient number, since it is larger than the sum of its proper divisors (676632616).

721741424 is a wasteful number, since it uses less digits than its factorization.

721741424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45108847 (or 45108841 counting only the distinct ones).

The product of its digits is 12544, while the sum is 32.

The square root of 721741424 is about 26865.2456530738. The cubic root of 721741424 is about 897.0029625058.

The spelling of 721741424 in words is "seven hundred twenty-one million, seven hundred forty-one thousand, four hundred twenty-four".