30195390 has 16 divisors (see below), whose sum is σ = 72469008. Its totient is φ = 8052096.

The previous prime is 30195371. The next prime is 30195391. The reversal of 30195390 is 9359103.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 1006513 = 30195390 / (3 + 0 + 1 + 9 + 5 + 3 + 9 + 0).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30195391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 503227 + ... + 503286.

It is an arithmetic number, because the mean of its divisors is an integer number (4529313).

Almost surely, 2^30195390 is an apocalyptic number.

30195390 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

30195390 is an abundant number, since it is smaller than the sum of its proper divisors (42273618).

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

30195390 is a wasteful number, since it uses less digits than its factorization.

30195390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1006523.

The product of its (nonzero) digits is 3645, while the sum is 30.

The square root of 30195390 is about 5495.0332119106. The cubic root of 30195390 is about 311.3963715351.

The spelling of 30195390 in words is "thirty million, one hundred ninety-five thousand, three hundred ninety".