308120628 has 24 divisors (see below), whose sum is σ = 735669088. Its totient is φ = 100318176.

The previous prime is 308120623. The next prime is 308120647. The reversal of 308120628 is 826021803.

It is a super-2 number, since 2×308120628² = 189876642798228768, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 308120595 and 308120604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (308120623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 298051 + ... + 299082.

Almost surely, 2^308120628 is an apocalyptic number.

It is an amenable number.

308120628 is an abundant number, since it is smaller than the sum of its proper divisors (427548460).

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

308120628 is a wasteful number, since it uses less digits than its factorization.

308120628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 597183 (or 597181 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 308120628 is about 17553.3651474582. The cubic root of 308120628 is about 675.4194945225.

The spelling of 308120628 in words is "three hundred eight million, one hundred twenty thousand, six hundred twenty-eight".