30161672 has 32 divisors (see below), whose sum is σ = 60134400. Its totient is φ = 14133504.

The previous prime is 30161669. The next prime is 30161693. The reversal of 30161672 is 27616103.

It is an alternating number because its digits alternate between odd and even.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 62729 + ... + 63207.

It is an arithmetic number, because the mean of its divisors is an integer number (1879200).

Almost surely, 2^30161672 is an apocalyptic number.

It is an amenable number.

30161672 is a deficient number, since it is larger than the sum of its proper divisors (29972728).

30161672 is a wasteful number, since it uses less digits than its factorization.

30161672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 965 (or 961 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 26.

The square root of 30161672 is about 5491.9643116102. The cubic root of 30161672 is about 311.2804203532.

Adding to 30161672 its reverse (27616103), we get a palindrome (57777775).

The spelling of 30161672 in words is "thirty million, one hundred sixty-one thousand, six hundred seventy-two".