163240424 has 16 divisors (see below), whose sum is σ = 311851620. Its totient is φ = 80080000.

The previous prime is 163240423. The next prime is 163240459. The reversal of 163240424 is 424042361.

It can be written as a sum of positive squares in 2 ways, for example, as 155500900 + 7739524 = 12470^2 + 2782^2 .

It is a junction number, because it is equal to n+sod(n) for n = 163240393 and 163240402.

It is not an unprimeable number, because it can be changed into a prime (163240421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 192077 + ... + 192924.

Almost surely, 2^163240424 is an apocalyptic number.

It is an amenable number.

163240424 is a deficient number, since it is larger than the sum of its proper divisors (148611196).

163240424 is a wasteful number, since it uses less digits than its factorization.

163240424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 385060 (or 385056 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 26.

The square root of 163240424 is about 12776.5575958472. The cubic root of 163240424 is about 546.5239997195.

Adding to 163240424 its reverse (424042361), we get a palindrome (587282785).

The spelling of 163240424 in words is "one hundred sixty-three million, two hundred forty thousand, four hundred twenty-four".