2157015210 has 128 divisors (see below), whose sum is σ = 6252871680. Its totient is φ = 465543936.

The previous prime is 2157015209. The next prime is 2157015221. The reversal of 2157015210 is 125107512.

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 63 ways as a sum of consecutive naturals, for example, 378744 + ... + 384396.

It is an arithmetic number, because the mean of its divisors is an integer number (48850560).

Almost surely, 2^2157015210 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2157015210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3126435840).

2157015210 is an abundant number, since it is smaller than the sum of its proper divisors (4095856470).

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

2157015210 is a wasteful number, since it uses less digits than its factorization.

2157015210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5772.

The product of its (nonzero) digits is 700, while the sum is 24.

The square root of 2157015210 is about 46443.6778259431. The cubic root of 2157015210 is about 1292.0651196302.

The spelling of 2157015210 in words is "two billion, one hundred fifty-seven million, fifteen thousand, two hundred ten".