1082644020 has 72 divisors (see below), whose sum is σ = 3329047176. Its totient is φ = 284746752.

The previous prime is 1082644019. The next prime is 1082644027. The reversal of 1082644020 is 204462801.

1082644020 is a `hidden beast` number, since 10 + 8 + 2 + 644 + 0 + 2 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 325513764 + 757130256 = 18042^2 + 27516^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1082644027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 28057 + ... + 54336.

Almost surely, 2^1082644020 is an apocalyptic number.

1082644020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1082644020 is an abundant number, since it is smaller than the sum of its proper divisors (2246403156).

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

1082644020 is a wasteful number, since it uses less digits than its factorization.

1082644020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82481 (or 82476 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

The square root of 1082644020 is about 32903.5563427420. The cubic root of 1082644020 is about 1026.8221469048.

The spelling of 1082644020 in words is "one billion, eighty-two million, six hundred forty-four thousand, twenty".