163007428 has 6 divisors (see below), whose sum is σ = 285263006. Its totient is φ = 81503712.

The previous prime is 163007389. The next prime is 163007443. The reversal of 163007428 is 824700361.

It can be written as a sum of positive squares in only one way, i.e., 160985344 + 2022084 = 12688^2 + 1422^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 163007428.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20375925 + ... + 20375932.

Almost surely, 2^163007428 is an apocalyptic number.

It is an amenable number.

163007428 is a deficient number, since it is larger than the sum of its proper divisors (122255578).

163007428 is a wasteful number, since it uses less digits than its factorization.

163007428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40751861 (or 40751859 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 163007428 is about 12767.4362344208. The cubic root of 163007428 is about 546.2638547245.

Adding to 163007428 its reverse (824700361), we get a palindrome (987707789).

The spelling of 163007428 in words is "one hundred sixty-three million, seven thousand, four hundred twenty-eight".