2688215146 has 8 divisors (see below), whose sum is σ = 4171368420. Its totient is φ = 1297759008.

The previous prime is 2688215141. The next prime is 2688215147. The reversal of 2688215146 is 6415128862.

It can be written as a sum of positive squares in 2 ways, for example, as 2686867225 + 1347921 = 51835^2 + 1161^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (2688215141) 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, 23174211 + ... + 23174326.

Almost surely, 2^2688215146 is an apocalyptic number.

2688215146 is a deficient number, since it is larger than the sum of its proper divisors (1483153274).

2688215146 is a wasteful number, since it uses less digits than its factorization.

2688215146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46348568.

The product of its digits is 184320, while the sum is 43.

The square root of 2688215146 is about 51848.0004050301. Note that the first 3 decimals coincide. The cubic root of 2688215146 is about 1390.4477528592.

The spelling of 2688215146 in words is "two billion, six hundred eighty-eight million, two hundred fifteen thousand, one hundred forty-six".