1080856620 has 36 divisors (see below), whose sum is σ = 3278598960. Its totient is φ = 288228384.

The previous prime is 1080856619. The next prime is 1080856649. The reversal of 1080856620 is 266580801.

It is a happy number.

1080856620 is a `hidden beast` number, since 10 + 80 + 8 + 566 + 2 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3002200 + ... + 3002559.

Almost surely, 2^1080856620 is an apocalyptic number.

1080856620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1080856620 is an abundant number, since it is smaller than the sum of its proper divisors (2197742340).

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

1080856620 is a wasteful number, since it uses less digits than its factorization.

1080856620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6004774 (or 6004769 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

The square root of 1080856620 is about 32876.3839252434. The cubic root of 1080856620 is about 1026.2567555040.

The spelling of 1080856620 in words is "one billion, eighty million, eight hundred fifty-six thousand, six hundred twenty".