306481332 has 12 divisors (see below), whose sum is σ = 715123136. Its totient is φ = 102160440.

The previous prime is 306481289. The next prime is 306481337. The reversal of 306481332 is 233184603.

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

It is a self number, because there is not a number n which added to its sum of digits gives 306481332.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (306481337) 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, 12770044 + ... + 12770067.

Almost surely, 2^306481332 is an apocalyptic number.

It is an amenable number.

306481332 is an abundant number, since it is smaller than the sum of its proper divisors (408641804).

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

306481332 is a wasteful number, since it uses less digits than its factorization.

306481332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25540118 (or 25540116 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 30.

The square root of 306481332 is about 17506.6082380340. The cubic root of 306481332 is about 674.2195512005.

The spelling of 306481332 in words is "three hundred six million, four hundred eighty-one thousand, three hundred thirty-two".