30666732 has 12 divisors (see below), whose sum is σ = 71555736. Its totient is φ = 10222240.

The previous prime is 30666689. The next prime is 30666739. The reversal of 30666732 is 23766603.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 30666693 and 30666702.

It is not an unprimeable number, because it can be changed into a prime (30666739) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1277769 + ... + 1277792.

It is an arithmetic number, because the mean of its divisors is an integer number (5962978).

Almost surely, 2^30666732 is an apocalyptic number.

It is an amenable number.

30666732 is an abundant number, since it is smaller than the sum of its proper divisors (40889004).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30666732 is a wasteful number, since it uses less digits than its factorization.

30666732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2555568 (or 2555566 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 33.

The square root of 30666732 is about 5537.7551408490. The cubic root of 30666732 is about 313.0082847144.

The spelling of 30666732 in words is "thirty million, six hundred sixty-six thousand, seven hundred thirty-two".