30197916 has 216 divisors, whose sum is σ = 100835280. Its totient is φ = 7547904.

The previous prime is 30197891. The next prime is 30197917. The reversal of 30197916 is 61979103.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30197917) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 569746 + ... + 569798.

It is an arithmetic number, because the mean of its divisors is an integer number (466830).

Almost surely, 2^30197916 is an apocalyptic number.

30197916 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30197916, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (50417640).

30197916 is an abundant number, since it is smaller than the sum of its proper divisors (70637364).

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

30197916 is a wasteful number, since it uses less digits than its factorization.

30197916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113 (or 101 counting only the distinct ones).

The product of its (nonzero) digits is 10206, while the sum is 36.

The square root of 30197916 is about 5495.2630510286. The cubic root of 30197916 is about 311.4050545967.

It can be divided in two parts, 30197 and 916, that added together give a palindrome (31113).

The spelling of 30197916 in words is "thirty million, one hundred ninety-seven thousand, nine hundred sixteen".