30205149 has 8 divisors (see below), whose sum is σ = 43371552. Its totient is φ = 18587760.

The previous prime is 30205139. The next prime is 30205157. The reversal of 30205149 is 94150203.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 30205149 - 2⁸ = 30204893 is a prime.

It is a super-2 number, since 2×30205149² = 1824702052224402, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30205139) 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, 387207 + ... + 387284.

It is an arithmetic number, because the mean of its divisors is an integer number (5421444).

Almost surely, 2^30205149 is an apocalyptic number.

30205149 is a gapful number since it is divisible by the number (39) formed by its first and last digit.

It is an amenable number.

30205149 is a deficient number, since it is larger than the sum of its proper divisors (13166403).

30205149 is a wasteful number, since it uses less digits than its factorization.

30205149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 774507.

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 30205149 is about 5495.9211238882. The cubic root of 30205149 is about 311.4299151749.

The spelling of 30205149 in words is "thirty million, two hundred five thousand, one hundred forty-nine".