2016215620 has 12 divisors (see below), whose sum is σ = 4234052844. Its totient is φ = 806486240.

The previous prime is 2016215599. The next prime is 2016215651. The reversal of 2016215620 is 265126102.

It can be written as a sum of positive squares in 2 ways, for example, as 904926724 + 1111288896 = 30082^2 + 33336^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50405371 + ... + 50405410.

It is an arithmetic number, because the mean of its divisors is an integer number (352837737).

Almost surely, 2^2016215620 is an apocalyptic number.

2016215620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2016215620 is an abundant number, since it is smaller than the sum of its proper divisors (2217837224).

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

2016215620 is a wasteful number, since it uses less digits than its factorization.

2016215620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100810790 (or 100810788 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 2016215620 is about 44902.2896966291. The cubic root of 2016215620 is about 1263.3169554077.

The spelling of 2016215620 in words is "two billion, sixteen million, two hundred fifteen thousand, six hundred twenty".