724744404 has 36 divisors (see below), whose sum is σ = 1835264340. Its totient is φ = 241150080.

The previous prime is 724744367. The next prime is 724744409. The reversal of 724744404 is 404447427.

724744404 is a `hidden beast` number, since 7 + 247 + 4 + 4 + 404 = 666.

724744404 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 382124304 + 342620100 = 19548^2 + 18510^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×724744404² = 1050508902258630432, which contains 22 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (724744409) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2794 + ... + 38174.

It is an arithmetic number, because the mean of its divisors is an integer number (50979565).

Almost surely, 2^724744404 is an apocalyptic number.

It is an amenable number.

724744404 is an abundant number, since it is smaller than the sum of its proper divisors (1110519936).

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

724744404 is a wasteful number, since it uses less digits than its factorization.

724744404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35960 (or 35955 counting only the distinct ones).

The product of its (nonzero) digits is 100352, while the sum is 36.

The square root of 724744404 is about 26921.0773187107. The cubic root of 724744404 is about 898.2453070968.

The spelling of 724744404 in words is "seven hundred twenty-four million, seven hundred forty-four thousand, four hundred four".