30198132 has 18 divisors (see below), whose sum is σ = 76334258. Its totient is φ = 10066032.

The previous prime is 30198101. The next prime is 30198143. The reversal of 30198132 is 23189103.

It can be written as a sum of positive squares in only one way, i.e., 28772496 + 1425636 = 5364^2 + 1194^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a junction number, because it is equal to n+sod(n) for n = 30198096 and 30198105.

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 419383 + ... + 419454.

Almost surely, 2^30198132 is an apocalyptic number.

It is an amenable number.

30198132 is an abundant number, since it is smaller than the sum of its proper divisors (46136126).

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

30198132 is a wasteful number, since it uses less digits than its factorization.

30198132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 838847 (or 838842 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 30198132 is about 5495.2827042837. The cubic root of 30198132 is about 311.4057970689.

The spelling of 30198132 in words is "thirty million, one hundred ninety-eight thousand, one hundred thirty-two".