309046852 has 12 divisors (see below), whose sum is σ = 559481580. Its totient is φ = 149194976.

The previous prime is 309046811. The next prime is 309046853. The reversal of 309046852 is 258640903.

It can be written as a sum of positive squares in 2 ways, for example, as 110124036 + 198922816 = 10494^2 + 14104^2 .

It is a super-2 number, since 2×309046852² = 191019913462219808, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (309046853) 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, 1331983 + ... + 1332214.

It is an arithmetic number, because the mean of its divisors is an integer number (46623465).

Almost surely, 2^309046852 is an apocalyptic number.

It is an amenable number.

309046852 is a deficient number, since it is larger than the sum of its proper divisors (250434728).

309046852 is a wasteful number, since it uses less digits than its factorization.

309046852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2664230 (or 2664228 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 37.

The square root of 309046852 is about 17579.7284393133. The cubic root of 309046852 is about 676.0955976283.

The spelling of 309046852 in words is "three hundred nine million, forty-six thousand, eight hundred fifty-two".