4640432 has 10 divisors (see below), whose sum is σ = 8990868. Its totient is φ = 2320208.

The previous prime is 4640423. The next prime is 4640437. The reversal of 4640432 is 2340464.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 4640398 and 4640407.

It is not an unprimeable number, because it can be changed into a prime (4640437) by changing a digit.

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 as a sum of consecutive naturals, namely, 144998 + ... + 145029.

Almost surely, 2^4640432 is an apocalyptic number.

It is an amenable number.

4640432 is a deficient number, since it is larger than the sum of its proper divisors (4350436).

4640432 is a wasteful number, since it uses less digits than its factorization.

4640432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290035 (or 290029 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 4640432 is about 2154.1661960025. The cubic root of 4640432 is about 166.7961944204.

Adding to 4640432 its reverse (2340464), we get a palindrome (6980896).

Subtracting from 4640432 its reverse (2340464), we obtain a cube (2299968 = 132³).

The spelling of 4640432 in words is "four million, six hundred forty thousand, four hundred thirty-two".