724398 has 16 divisors (see below), whose sum is σ = 1459920. Its totient is φ = 239616.

The previous prime is 724393. The next prime is 724403. The reversal of 724398 is 893427.

It is an interprime number because it is at equal distance from previous prime (724393) and next prime (724403).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (724393) by changing a digit.

724398 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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 7 ways as a sum of consecutive naturals, for example, 558 + ... + 1326.

It is an arithmetic number, because the mean of its divisors is an integer number (91245).

2⁷²⁴³⁹⁸ is an apocalyptic number.

724398 is an abundant number, since it is smaller than the sum of its proper divisors (735522).

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

724398 is a wasteful number, since it uses less digits than its factorization.

724398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 931.

The product of its digits is 12096, while the sum is 33.

The square root of 724398 is about 851.1157383106. The cubic root of 724398 is about 89.8102173714.

The spelling of 724398 in words is "seven hundred twenty-four thousand, three hundred ninety-eight".