308020628 has 24 divisors (see below), whose sum is σ = 568008000. Its totient is φ = 145749888.

The previous prime is 308020627. The next prime is 308020631. The reversal of 308020628 is 826020803.

It is a self number, because there is not a number n which added to its sum of digits gives 308020628.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (308020621) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 104876 + ... + 107772.

It is an arithmetic number, because the mean of its divisors is an integer number (23667000).

Almost surely, 2^308020628 is an apocalyptic number.

308020628 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

It is an amenable number.

308020628 is a deficient number, since it is larger than the sum of its proper divisors (259987372).

308020628 is a wasteful number, since it uses less digits than its factorization.

308020628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4319 (or 4317 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 308020628 is about 17550.5164596373. The cubic root of 308020628 is about 675.3464178858.

The spelling of 308020628 in words is "three hundred eight million, twenty thousand, six hundred twenty-eight".