1628682220 has 24 divisors (see below), whose sum is σ = 3731163408. Its totient is φ = 592248000.

The previous prime is 1628682199. The next prime is 1628682239. The reversal of 1628682220 is 222868261.

It is a self number, because there is not a number n which added to its sum of digits gives 1628682220.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3701331 + ... + 3701770.

It is an arithmetic number, because the mean of its divisors is an integer number (155465142).

Almost surely, 2^1628682220 is an apocalyptic number.

1628682220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1628682220 is an abundant number, since it is smaller than the sum of its proper divisors (2102481188).

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

1628682220 is a wasteful number, since it uses less digits than its factorization.

1628682220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7403121 (or 7403119 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 37.

The square root of 1628682220 is about 40356.9352156479. The cubic root of 1628682220 is about 1176.5546874616.

The spelling of 1628682220 in words is "one billion, six hundred twenty-eight million, six hundred eighty-two thousand, two hundred twenty".