30191086 has 16 divisors (see below), whose sum is σ = 47001600. Its totient is φ = 14529240.

The previous prime is 30191081. The next prime is 30191123. The reversal of 30191086 is 68019103.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30191081) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11115 + ... + 13561.

It is an arithmetic number, because the mean of its divisors is an integer number (2937600).

Almost surely, 2^30191086 is an apocalyptic number.

30191086 is a deficient number, since it is larger than the sum of its proper divisors (16810514).

30191086 is a wasteful number, since it uses less digits than its factorization.

30191086 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2679.

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 30191086 is about 5494.6415715677. The cubic root of 30191086 is about 311.3815755274.

The spelling of 30191086 in words is "thirty million, one hundred ninety-one thousand, eighty-six".