724135432 has 8 divisors (see below), whose sum is σ = 1357753950. Its totient is φ = 362067712.

The previous prime is 724135411. The next prime is 724135441. The reversal of 724135432 is 234531427.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 686754436 + 37380996 = 26206^2 + 6114^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 724135394 and 724135403.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45258457 + ... + 45258472.

Almost surely, 2^724135432 is an apocalyptic number.

It is an amenable number.

724135432 is a deficient number, since it is larger than the sum of its proper divisors (633618518).

724135432 is a wasteful number, since it uses less digits than its factorization.

724135432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90516935 (or 90516931 counting only the distinct ones).

The product of its digits is 20160, while the sum is 31.

The square root of 724135432 is about 26909.7646217874. The cubic root of 724135432 is about 897.9936507803.

Adding to 724135432 its reverse (234531427), we get a palindrome (958666859).

The spelling of 724135432 in words is "seven hundred twenty-four million, one hundred thirty-five thousand, four hundred thirty-two".