30161000 has 32 divisors (see below), whose sum is σ = 70579080. Its totient is φ = 12064000.

The previous prime is 30160969. The next prime is 30161011. The reversal of 30161000 is 16103.

It can be written as a sum of positive squares in 4 ways, for example, as 13498276 + 16662724 = 3674^2 + 4082^2 .

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, 14081 + ... + 16080.

Almost surely, 2^30161000 is an apocalyptic number.

It is an amenable number.

30161000 is an abundant number, since it is smaller than the sum of its proper divisors (40418080).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30161000 is a wasteful number, since it uses less digits than its factorization.

30161000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30182 (or 30168 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 11.

The square root of 30161000 is about 5491.9031309738. The cubic root of 30161000 is about 311.2781085672.

Adding to 30161000 its reverse (16103), we get a palindrome (30177103).

The spelling of 30161000 in words is "thirty million, one hundred sixty-one thousand".