3278785620 has 48 divisors (see below), whose sum is σ = 10015201728. Its totient is φ = 794856960.

The previous prime is 3278785619. The next prime is 3278785637. The reversal of 3278785620 is 265878723.

It is a self number, because there is not a number n which added to its sum of digits gives 3278785620.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2483269 + ... + 2484588.

It is an arithmetic number, because the mean of its divisors is an integer number (208650036).

Almost surely, 2^3278785620 is an apocalyptic number.

3278785620 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3278785620 is an abundant number, since it is smaller than the sum of its proper divisors (6736416108).

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

3278785620 is a wasteful number, since it uses less digits than its factorization.

3278785620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4967880 (or 4967878 counting only the distinct ones).

The product of its (nonzero) digits is 1128960, while the sum is 48.

The square root of 3278785620 is about 57260.6812743265. The cubic root of 3278785620 is about 1485.6083802275.

The spelling of 3278785620 in words is "three billion, two hundred seventy-eight million, seven hundred eighty-five thousand, six hundred twenty".