30032661 has 16 divisors (see below), whose sum is σ = 41817600. Its totient is φ = 19147968.

The previous prime is 30032657. The next prime is 30032699. The reversal of 30032661 is 16623003.

It is not a de Polignac number, because 30032661 - 2² = 30032657 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30032161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7900 + ... + 11066.

It is an arithmetic number, because the mean of its divisors is an integer number (2613600).

Almost surely, 2^30032661 is an apocalyptic number.

It is an amenable number.

30032661 is a deficient number, since it is larger than the sum of its proper divisors (11784939).

30032661 is a wasteful number, since it uses less digits than its factorization.

30032661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3308.

The product of its (nonzero) digits is 648, while the sum is 21.

The square root of 30032661 is about 5480.2062917376. The cubic root of 30032661 is about 310.8359711666.

Adding to 30032661 its reverse (16623003), we get a palindrome (46655664).

The spelling of 30032661 in words is "thirty million, thirty-two thousand, six hundred sixty-one".