30198942 has 24 divisors (see below), whose sum is σ = 68875560. Its totient is φ = 9536400.

The previous prime is 30198941. The next prime is 30198967. The reversal of 30198942 is 24989103.

It is a junction number, because it is equal to n+sod(n) for n = 30198897 and 30198906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30198941) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 43809 + ... + 44492.

It is an arithmetic number, because the mean of its divisors is an integer number (2869815).

Almost surely, 2^30198942 is an apocalyptic number.

30198942 is an abundant number, since it is smaller than the sum of its proper divisors (38676618).

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

30198942 is a wasteful number, since it uses less digits than its factorization.

30198942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88328 (or 88325 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 30198942 is about 5495.3564033646. The cubic root of 30198942 is about 311.4085813077.

The spelling of 30198942 in words is "thirty million, one hundred ninety-eight thousand, nine hundred forty-two".