1206215580 has 96 divisors (see below), whose sum is σ = 3500679168. Its totient is φ = 310003200.

The previous prime is 1206215561. The next prime is 1206215581. The reversal of 1206215580 is 855126021.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1206215581) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 502864 + ... + 505256.

It is an arithmetic number, because the mean of its divisors is an integer number (36465408).

Almost surely, 2^1206215580 is an apocalyptic number.

1206215580 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1206215580, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1750339584).

1206215580 is an abundant number, since it is smaller than the sum of its proper divisors (2294463588).

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

1206215580 is a wasteful number, since it uses less digits than its factorization.

1206215580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2707 (or 2705 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 30.

The square root of 1206215580 is about 34730.6144489268. The cubic root of 1206215580 is about 1064.4901436608.

The spelling of 1206215580 in words is "one billion, two hundred six million, two hundred fifteen thousand, five hundred eighty".