620508128 has 48 divisors (see below), whose sum is σ = 1267267680. Its totient is φ = 298722816.

The previous prime is 620508079. The next prime is 620508149. The reversal of 620508128 is 821805026.

620508128 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a junction number, because it is equal to n+sod(n) for n = 620508094 and 620508103.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 451250 + ... + 452622.

It is an arithmetic number, because the mean of its divisors is an integer number (26401410).

Almost surely, 2^620508128 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 620508128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (633633840).

620508128 is an abundant number, since it is smaller than the sum of its proper divisors (646759552).

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

620508128 is a wasteful number, since it uses less digits than its factorization.

620508128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1899 (or 1891 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 32.

The square root of 620508128 is about 24910.0005620233. Note that the first 3 decimals coincide. The cubic root of 620508128 is about 852.9347818750.

The spelling of 620508128 in words is "six hundred twenty million, five hundred eight thousand, one hundred twenty-eight".