30405332 has 12 divisors (see below), whose sum is σ = 53698260. Its totient is φ = 15062976.

The previous prime is 30405317. The next prime is 30405371. The reversal of 30405332 is 23350403.

It can be written as a sum of positive squares in 2 ways, for example, as 18267076 + 12138256 = 4274^2 + 3484^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34433 + ... + 35304.

It is an arithmetic number, because the mean of its divisors is an integer number (4474855).

Almost surely, 2^30405332 is an apocalyptic number.

It is an amenable number.

30405332 is a deficient number, since it is larger than the sum of its proper divisors (23292928).

30405332 is a wasteful number, since it uses less digits than its factorization.

30405332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69850 (or 69848 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 20.

The square root of 30405332 is about 5514.1030095565. The cubic root of 30405332 is about 312.1163958659.

Adding to 30405332 its reverse (23350403), we get a palindrome (53755735).

The spelling of 30405332 in words is "thirty million, four hundred five thousand, three hundred thirty-two".