30799188 has 36 divisors (see below), whose sum is σ = 88976160. Its totient is φ = 8799696.

The previous prime is 30799187. The next prime is 30799229. The reversal of 30799188 is 88199703.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30799183) 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, 60858 + ... + 61361.

It is an arithmetic number, because the mean of its divisors is an integer number (2471560).

Almost surely, 2^30799188 is an apocalyptic number.

It is an amenable number.

30799188 is an abundant number, since it is smaller than the sum of its proper divisors (58176972).

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

30799188 is a wasteful number, since it uses less digits than its factorization.

30799188 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122236 (or 122231 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 45.

The square root of 30799188 is about 5549.7016136005. The cubic root of 30799188 is about 313.4582867663.

The spelling of 30799188 in words is "thirty million, seven hundred ninety-nine thousand, one hundred eighty-eight".