620728304 has 40 divisors (see below), whose sum is σ = 1384994688. Its totient is φ = 263989440.

The previous prime is 620728291. The next prime is 620728319. The reversal of 620728304 is 403827026.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6482 + ... + 35825.

Almost surely, 2^620728304 is an apocalyptic number.

It is an amenable number.

620728304 is an abundant number, since it is smaller than the sum of its proper divisors (764266384).

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

620728304 is a wasteful number, since it uses less digits than its factorization.

620728304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42453 (or 42447 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 32.

The square root of 620728304 is about 24914.4195999024. The cubic root of 620728304 is about 853.0356527325.

The spelling of 620728304 in words is "six hundred twenty million, seven hundred twenty-eight thousand, three hundred four".