30188970 has 64 divisors (see below), whose sum is σ = 92010240. Its totient is φ = 6899904.

The previous prime is 30188969. The next prime is 30189007. The reversal of 30188970 is 7988103.

It is a super-2 number, since 2×30188970² = 1822747819321800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 6097 + ... + 9876.

It is an arithmetic number, because the mean of its divisors is an integer number (1437660).

Almost surely, 2^30188970 is an apocalyptic number.

30188970 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

30188970 is an abundant number, since it is smaller than the sum of its proper divisors (61821270).

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

30188970 is a wasteful number, since it uses less digits than its factorization.

30188970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15996 (or 15990 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 36.

The square root of 30188970 is about 5494.4490169625. The cubic root of 30188970 is about 311.3743007664.

The spelling of 30188970 in words is "thirty million, one hundred eighty-eight thousand, nine hundred seventy".