30126188 has 12 divisors (see below), whose sum is σ = 52761240. Its totient is φ = 15051552.

The previous prime is 30126181. The next prime is 30126197. The reversal of 30126188 is 88162103.

It is a super-2 number, since 2×30126188² = 1815174406822688, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 30126188.

It is not an unprimeable number, because it can be changed into a prime (30126181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6083 + ... + 9861.

It is an arithmetic number, because the mean of its divisors is an integer number (4396770).

Almost surely, 2^30126188 is an apocalyptic number.

It is an amenable number.

30126188 is a deficient number, since it is larger than the sum of its proper divisors (22635052).

30126188 is a wasteful number, since it uses less digits than its factorization.

30126188 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5776 (or 5774 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 29.

The square root of 30126188 is about 5488.7328227925. The cubic root of 30126188 is about 311.1583027997.

The spelling of 30126188 in words is "thirty million, one hundred twenty-six thousand, one hundred eighty-eight".