724428811 has 4 divisors (see below), whose sum is σ = 728221824. Its totient is φ = 720635800.

The previous prime is 724428791. The next prime is 724428829. The reversal of 724428811 is 118824427.

It is a happy number.

724428811 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 724428811 - 2⁵ = 724428779 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (724428851) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1896220 + ... + 1896601.

It is an arithmetic number, because the mean of its divisors is an integer number (182055456).

Almost surely, 2^724428811 is an apocalyptic number.

724428811 is a deficient number, since it is larger than the sum of its proper divisors (3793013).

724428811 is a wasteful number, since it uses less digits than its factorization.

724428811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3793012.

The product of its digits is 28672, while the sum is 37.

The square root of 724428811 is about 26915.2152322808. The cubic root of 724428811 is about 898.1149066011.

The spelling of 724428811 in words is "seven hundred twenty-four million, four hundred twenty-eight thousand, eight hundred eleven".