724420728672 has 48 divisors (see below), whose sum is σ = 1901729782512. Its totient is φ = 241457656320.

The previous prime is 724420728667. The next prime is 724420728677. The reversal of 724420728672 is 276827024427.

It is an interprime number because it is at equal distance from previous prime (724420728667) and next prime (724420728677).

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (724420728677) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1262538 + ... + 1744374.

It is an arithmetic number, because the mean of its divisors is an integer number (39619370469).

Almost surely, 2^724420728672 is an apocalyptic number.

It is an amenable number.

724420728672 is an abundant number, since it is smaller than the sum of its proper divisors (1177309053840).

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

724420728672 is a wasteful number, since it uses less digits than its factorization.

724420728672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 497511 (or 497503 counting only the distinct ones).

The product of its (nonzero) digits is 4214784, while the sum is 51.

The spelling of 724420728672 in words is "seven hundred twenty-four billion, four hundred twenty million, seven hundred twenty-eight thousand, six hundred seventy-two".