724409478 has 48 divisors (see below), whose sum is σ = 1697492160. Its totient is φ = 221945472.

The previous prime is 724409467. The next prime is 724409503. The reversal of 724409478 is 874904427.

724409478 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 49450 + ... + 62402.

It is an arithmetic number, because the mean of its divisors is an integer number (35364420).

Almost surely, 2^724409478 is an apocalyptic number.

724409478 is a gapful number since it is divisible by the number (78) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 724409478, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (848746080).

724409478 is an abundant number, since it is smaller than the sum of its proper divisors (973082682).

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

724409478 is a wasteful number, since it uses less digits than its factorization.

724409478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13213 (or 13210 counting only the distinct ones).

The product of its (nonzero) digits is 451584, while the sum is 45.

The square root of 724409478 is about 26914.8560835833. The cubic root of 724409478 is about 898.1069171296.

It can be divided in two parts, 72440 and 9478, that added together give a palindrome (81918).

The spelling of 724409478 in words is "seven hundred twenty-four million, four hundred nine thousand, four hundred seventy-eight".