30189750 has 32 divisors (see below), whose sum is σ = 75355488. Its totient is φ = 8050400.

The previous prime is 30189707. The next prime is 30189751. The reversal of 30189750 is 5798103.

It is a super-2 number, since 2×30189750² = 1822842010125000, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30189751) 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 15 ways as a sum of consecutive naturals, for example, 19377 + ... + 20876.

It is an arithmetic number, because the mean of its divisors is an integer number (2354859).

Almost surely, 2^30189750 is an apocalyptic number.

30189750 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

30189750 is an abundant number, since it is smaller than the sum of its proper divisors (45165738).

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

30189750 is a wasteful number, since it uses less digits than its factorization.

30189750 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40273 (or 40263 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 33.

The square root of 30189750 is about 5494.5199972336. The cubic root of 30189750 is about 311.3769824286.

The spelling of 30189750 in words is "thirty million, one hundred eighty-nine thousand, seven hundred fifty".