724029138 has 96 divisors (see below), whose sum is σ = 1909641600. Its totient is φ = 198955008.

The previous prime is 724029101. The next prime is 724029161. The reversal of 724029138 is 831920427.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 2817106 + ... + 2817362.

It is an arithmetic number, because the mean of its divisors is an integer number (19892100).

Almost surely, 2^724029138 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 724029138, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (954820800).

724029138 is an abundant number, since it is smaller than the sum of its proper divisors (1185612462).

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

724029138 is a wasteful number, since it uses less digits than its factorization.

724029138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 561 (or 298 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 724029138 is about 26907.7895413206. The cubic root of 724029138 is about 897.9497105615.

The spelling of 724029138 in words is "seven hundred twenty-four million, twenty-nine thousand, one hundred thirty-eight".