724368820 has 24 divisors (see below), whose sum is σ = 1738485504. Its totient is φ = 248354976.

The previous prime is 724368809. The next prime is 724368829. The reversal of 724368820 is 28863427.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (724368829) 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, 2586892 + ... + 2587171.

It is an arithmetic number, because the mean of its divisors is an integer number (72436896).

Almost surely, 2^724368820 is an apocalyptic number.

724368820 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

724368820 is an abundant number, since it is smaller than the sum of its proper divisors (1014116684).

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

724368820 is a wasteful number, since it uses less digits than its factorization.

724368820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5174079 (or 5174077 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 40.

The square root of 724368820 is about 26914.1007652123. The cubic root of 724368820 is about 898.0901145176.

The spelling of 724368820 in words is "seven hundred twenty-four million, three hundred sixty-eight thousand, eight hundred twenty".