161044628 has 12 divisors (see below), whose sum is σ = 290919552. Its totient is φ = 77924760.

The previous prime is 161044603. The next prime is 161044633. The reversal of 161044628 is 826440161.

It is a junction number, because it is equal to n+sod(n) for n = 161044594 and 161044603.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 649250 + ... + 649497.

It is an arithmetic number, because the mean of its divisors is an integer number (24243296).

Almost surely, 2^161044628 is an apocalyptic number.

It is an amenable number.

161044628 is a deficient number, since it is larger than the sum of its proper divisors (129874924).

161044628 is a wasteful number, since it uses less digits than its factorization.

161044628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1298782 (or 1298780 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 32.

The square root of 161044628 is about 12690.3360081599. The cubic root of 161044628 is about 544.0624432719.

Adding to 161044628 its reverse (826440161), we get a palindrome (987484789).

The spelling of 161044628 in words is "one hundred sixty-one million, forty-four thousand, six hundred twenty-eight".