30872169 has 12 divisors (see below), whose sum is σ = 46940400. Its totient is φ = 19498104.

The previous prime is 30872147. The next prime is 30872197. The reversal of 30872169 is 96127803.

It is not a de Polignac number, because 30872169 - 2⁷ = 30872041 is a prime.

It is a super-2 number, since 2×30872169² = 1906181637529122, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (30872069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 90099 + ... + 90440.

It is an arithmetic number, because the mean of its divisors is an integer number (3911700).

Almost surely, 2^30872169 is an apocalyptic number.

It is an amenable number.

30872169 is a deficient number, since it is larger than the sum of its proper divisors (16068231).

30872169 is a wasteful number, since it uses less digits than its factorization.

30872169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180564 (or 180561 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 30872169 is about 5556.2729414599. The cubic root of 30872169 is about 313.7056791519.

The spelling of 30872169 in words is "thirty million, eight hundred seventy-two thousand, one hundred sixty-nine".