30529205 has 18 divisors (see below), whose sum is σ = 42737346. Its totient is φ = 20875008.

The previous prime is 30529201. The next prime is 30529207. The reversal of 30529205 is 50292503.

It can be written as a sum of positive squares in 3 ways, for example, as 1552516 + 28976689 = 1246^2 + 5383^2 .

It is not a de Polignac number, because 30529205 - 2² = 30529201 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30529201) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 86309 + ... + 86661.

It is an arithmetic number, because the mean of its divisors is an integer number (2374297).

Almost surely, 2^30529205 is an apocalyptic number.

30529205 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

30529205 is a deficient number, since it is larger than the sum of its proper divisors (12208141).

30529205 is an frugal number, since it uses more digits than its factorization.

30529205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 725 (or 365 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 26.

The square root of 30529205 is about 5525.3239724020. The cubic root of 30529205 is about 312.5396813610.

The spelling of 30529205 in words is "thirty million, five hundred twenty-nine thousand, two hundred five".