30340188 has 36 divisors (see below), whose sum is σ = 80731560. Its totient is φ = 9580896.

The previous prime is 30340183. The next prime is 30340199. The reversal of 30340188 is 88104303.

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 (30340181) 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, 21495 + ... + 22862.

Almost surely, 2^30340188 is an apocalyptic number.

30340188 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

It is an amenable number.

30340188 is an abundant number, since it is smaller than the sum of its proper divisors (50391372).

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

30340188 is a wasteful number, since it uses less digits than its factorization.

30340188 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44386 (or 44381 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 30340188 is about 5508.1928070829. The cubic root of 30340188 is about 311.8933313857.

The spelling of 30340188 in words is "thirty million, three hundred forty thousand, one hundred eighty-eight".