1206650320 has 20 divisors (see below), whose sum is σ = 2805462180. Its totient is φ = 482660096.

The previous prime is 1206650281. The next prime is 1206650329. The reversal of 1206650320 is 230566021.

It can be written as a sum of positive squares in 2 ways, for example, as 387774864 + 818875456 = 19692^2 + 28616^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-2 number, since 2×1206650320² = 2912009989512204800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1206650329) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7541485 + ... + 7541644.

It is an arithmetic number, because the mean of its divisors is an integer number (140273109).

Almost surely, 2^1206650320 is an apocalyptic number.

1206650320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1206650320 is an abundant number, since it is smaller than the sum of its proper divisors (1598811860).

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

1206650320 is a wasteful number, since it uses less digits than its factorization.

1206650320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15083142 (or 15083136 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 1206650320 is about 34736.8726283757. The cubic root of 1206650320 is about 1064.6180149044.

The spelling of 1206650320 in words is "one billion, two hundred six million, six hundred fifty thousand, three hundred twenty".