30132261 has 6 divisors (see below), whose sum is σ = 43524390. Its totient is φ = 20088168.

The previous prime is 30132251. The next prime is 30132269. The reversal of 30132261 is 16223103.

It can be written as a sum of positive squares in only one way, i.e., 20304036 + 9828225 = 4506^2 + 3135^2 .

It is not a de Polignac number, because 30132261 - 2¹¹ = 30130213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30132269) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1674006 + ... + 1674023.

It is an arithmetic number, because the mean of its divisors is an integer number (7254065).

Almost surely, 2^30132261 is an apocalyptic number.

It is an amenable number.

30132261 is a deficient number, since it is larger than the sum of its proper divisors (13392129).

30132261 is a wasteful number, since it uses less digits than its factorization.

30132261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3348035 (or 3348032 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 30132261 is about 5489.2860191468. The cubic root of 30132261 is about 311.1792097197.

Adding to 30132261 its reverse (16223103), we get a palindrome (46355364).

The spelling of 30132261 in words is "thirty million, one hundred thirty-two thousand, two hundred sixty-one".