306449430 has 48 divisors (see below), whose sum is σ = 855560880. Its totient is φ = 70045248.

The previous prime is 306449393. The next prime is 306449431. The reversal of 306449430 is 34944603.

It is a super-2 number, since 2×306449430² = 187822506294649800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 306449391 and 306449400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (306449431) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 102765 + ... + 105704.

It is an arithmetic number, because the mean of its divisors is an integer number (17824185).

Almost surely, 2^306449430 is an apocalyptic number.

306449430 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

306449430 is an abundant number, since it is smaller than the sum of its proper divisors (549111450).

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

306449430 is a wasteful number, since it uses less digits than its factorization.

306449430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208493 (or 208486 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 33.

The square root of 306449430 is about 17505.6970726675. The cubic root of 306449430 is about 674.1961569551.

The spelling of 306449430 in words is "three hundred six million, four hundred forty-nine thousand, four hundred thirty".