724148172 has 72 divisors (see below), whose sum is σ = 2000037312. Its totient is φ = 219093600.

The previous prime is 724148171. The next prime is 724148177. The reversal of 724148172 is 271841427.

724148172 is a `hidden beast` number, since 72 + 41 + 481 + 72 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (724148171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 374047 + ... + 375977.

It is an arithmetic number, because the mean of its divisors is an integer number (27778296).

Almost surely, 2^724148172 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 724148172, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1000018656).

724148172 is an abundant number, since it is smaller than the sum of its proper divisors (1275889140).

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

724148172 is a wasteful number, since it uses less digits than its factorization.

724148172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2899 (or 2894 counting only the distinct ones).

The product of its digits is 25088, while the sum is 36.

The square root of 724148172 is about 26910.0013377926. The cubic root of 724148172 is about 897.9989170014.

Adding to 724148172 its reverse (271841427), we get a palindrome (995989599).

The spelling of 724148172 in words is "seven hundred twenty-four million, one hundred forty-eight thousand, one hundred seventy-two".