30149788 has 12 divisors (see below), whose sum is σ = 52954552. Its totient is φ = 15019920.

The previous prime is 30149773. The next prime is 30149807. The reversal of 30149788 is 88794103.

It is a self number, because there is not a number n which added to its sum of digits gives 30149788.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12498 + ... + 14713.

Almost surely, 2^30149788 is an apocalyptic number.

It is an amenable number.

30149788 is a deficient number, since it is larger than the sum of its proper divisors (22804764).

30149788 is a wasteful number, since it uses less digits than its factorization.

30149788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27492 (or 27490 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 40.

The square root of 30149788 is about 5490.8822606208. The cubic root of 30149788 is about 311.2395324512.

The spelling of 30149788 in words is "thirty million, one hundred forty-nine thousand, seven hundred eighty-eight".