30604161 has 32 divisors (see below), whose sum is σ = 49102848. Its totient is φ = 16585920.

The previous prime is 30604157. The next prime is 30604187. The reversal of 30604161 is 16140603.

It is not a de Polignac number, because 30604161 - 2² = 30604157 is a prime.

It is a super-2 number, since 2×30604161² = 1873229341027842, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (30600161) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 34060 + ... + 34946.

It is an arithmetic number, because the mean of its divisors is an integer number (1534464).

Almost surely, 2^30604161 is an apocalyptic number.

30604161 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

30604161 is a deficient number, since it is larger than the sum of its proper divisors (18498687).

30604161 is a wasteful number, since it uses less digits than its factorization.

30604161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 981.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 30604161 is about 5532.1027647722. The cubic root of 30604161 is about 312.7952571597.

Adding to 30604161 its reverse (16140603), we get a palindrome (46744764).

The spelling of 30604161 in words is "thirty million, six hundred four thousand, one hundred sixty-one".