308368020 has 48 divisors (see below), whose sum is σ = 893208960. Its totient is φ = 79395456.

The previous prime is 308368013. The next prime is 308368031. The reversal of 308368020 is 20863803.

It is a Harshad number since it is a multiple of its sum of digits (30).

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 in 15 ways as a sum of consecutive naturals, for example, 86872 + ... + 90351.

It is an arithmetic number, because the mean of its divisors is an integer number (18608520).

Almost surely, 2^308368020 is an apocalyptic number.

308368020 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

308368020 is an abundant number, since it is smaller than the sum of its proper divisors (584840940).

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

308368020 is a wasteful number, since it uses less digits than its factorization.

308368020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177264 (or 177262 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 308368020 is about 17560.4105874550. The cubic root of 308368020 is about 675.6002123586.

The spelling of 308368020 in words is "three hundred eight million, three hundred sixty-eight thousand, twenty".