30197892 has 12 divisors (see below), whose sum is σ = 70461776. Its totient is φ = 10065960.

The previous prime is 30197891. The next prime is 30197917. The reversal of 30197892 is 29879103.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 30197892.

It is not an unprimeable number, because it can be changed into a prime (30197891) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1258234 + ... + 1258257.

Almost surely, 2^30197892 is an apocalyptic number.

It is an amenable number.

30197892 is an abundant number, since it is smaller than the sum of its proper divisors (40263884).

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

30197892 is a wasteful number, since it uses less digits than its factorization.

30197892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2516498 (or 2516496 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 39.

The square root of 30197892 is about 5495.2608673292. The cubic root of 30197892 is about 311.4049720996.

The spelling of 30197892 in words is "thirty million, one hundred ninety-seven thousand, eight hundred ninety-two".