308420416 has 14 divisors (see below), whose sum is σ = 612021890. Its totient is φ = 154210176.

The previous prime is 308420393. The next prime is 308420449. The reversal of 308420416 is 614024803.

It can be written as a sum of positive squares in only one way, i.e., 306110016 + 2310400 = 17496^2 + 1520^2 .

It is a super-2 number, since 2×308420416² = 190246306011226112, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2409471 + ... + 2409598.

Almost surely, 2^308420416 is an apocalyptic number.

It is an amenable number.

308420416 is a deficient number, since it is larger than the sum of its proper divisors (303601474).

308420416 is an equidigital number, since it uses as much as digits as its factorization.

308420416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4819081 (or 4819071 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 28.

The square root of 308420416 is about 17561.9024026442. The cubic root of 308420416 is about 675.6384748044.

The spelling of 308420416 in words is "three hundred eight million, four hundred twenty thousand, four hundred sixteen".