30091145 has 24 divisors (see below), whose sum is σ = 42254784. Its totient is φ = 20511456.

The previous prime is 30091133. The next prime is 30091163. The reversal of 30091145 is 54119003.

It is a happy number.

It is not a de Polignac number, because 30091145 - 2⁶ = 30091081 is a prime.

It is a super-2 number, since 2×30091145² = 1810954014822050, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 30091145.

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 23 ways as a sum of consecutive naturals, for example, 64202 + ... + 64668.

It is an arithmetic number, because the mean of its divisors is an integer number (1760616).

Almost surely, 2^30091145 is an apocalyptic number.

30091145 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

30091145 is a deficient number, since it is larger than the sum of its proper divisors (12163639).

30091145 is a wasteful number, since it uses less digits than its factorization.

30091145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 749 (or 742 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 23.

The square root of 30091145 is about 5485.5396270558. The cubic root of 30091145 is about 311.0376087933.

The spelling of 30091145 in words is "thirty million, ninety-one thousand, one hundred forty-five".