721472112 has 120 divisors (see below), whose sum is σ = 2150085600. Its totient is φ = 225054720.

The previous prime is 721472099. The next prime is 721472113. The reversal of 721472112 is 211274127.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (721472113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 486412 + ... + 487892.

It is an arithmetic number, because the mean of its divisors is an integer number (17917380).

Almost surely, 2^721472112 is an apocalyptic number.

721472112 is a gapful number since it is divisible by the number (72) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 721472112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1075042800).

721472112 is an abundant number, since it is smaller than the sum of its proper divisors (1428613488).

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

721472112 is a wasteful number, since it uses less digits than its factorization.

721472112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1711 (or 1702 counting only the distinct ones).

The product of its digits is 1568, while the sum is 27.

The square root of 721472112 is about 26860.2329103826. The cubic root of 721472112 is about 896.8913788152.

The spelling of 721472112 in words is "seven hundred twenty-one million, four hundred seventy-two thousand, one hundred twelve".