300728420 has 12 divisors (see below), whose sum is σ = 631529724. Its totient is φ = 120291360.

The previous prime is 300728411. The next prime is 300728437. The reversal of 300728420 is 24827003.

It can be written as a sum of positive squares in 2 ways, for example, as 63075364 + 237653056 = 7942^2 + 15416^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 300728420.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7518191 + ... + 7518230.

It is an arithmetic number, because the mean of its divisors is an integer number (52627477).

Almost surely, 2^300728420 is an apocalyptic number.

It is an amenable number.

300728420 is an abundant number, since it is smaller than the sum of its proper divisors (330801304).

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

300728420 is a wasteful number, since it uses less digits than its factorization.

300728420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15036430 (or 15036428 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 26.

The square root of 300728420 is about 17341.5230011669. The cubic root of 300728420 is about 669.9743214336.

The spelling of 300728420 in words is "three hundred million, seven hundred twenty-eight thousand, four hundred twenty".