2687234850 has 144 divisors (see below), whose sum is σ = 7357732200. Its totient is φ = 703042560.

The previous prime is 2687234843. The next prime is 2687234881. The reversal of 2687234850 is 584327862.

It can be written as a sum of positive squares in 12 ways, for example, as 908841609 + 1778393241 = 30147^2 + 42171^2 .

It is a super-2 number, since 2×2687234850² = 14442462278109045000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a junction number, because it is equal to n+sod(n) for n = 2687234796 and 2687234805.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 9171304 + ... + 9171596.

Almost surely, 2^2687234850 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2687234850, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3678866100).

2687234850 is an abundant number, since it is smaller than the sum of its proper divisors (4670497350).

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

2687234850 is a wasteful number, since it uses less digits than its factorization.

2687234850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 629 (or 621 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 45.

The square root of 2687234850 is about 51838.5459865533. The cubic root of 2687234850 is about 1390.2787167745.

The spelling of 2687234850 in words is "two billion, six hundred eighty-seven million, two hundred thirty-four thousand, eight hundred fifty".