2136784 has 20 divisors (see below), whose sum is σ = 4458916. Its totient is φ = 986112.

The previous prime is 2136779. The next prime is 2136793. The reversal of 2136784 is 4876312.

2136784 is nontrivially palindromic in base 9.

It can be written as a sum of positive squares in 2 ways, for example, as 394384 + 1742400 = 628^2 + 1320^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4929 + ... + 5344.

2^2136784 is an apocalyptic number.

It is an amenable number.

2136784 is an abundant number, since it is smaller than the sum of its proper divisors (2322132).

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

2136784 is a wasteful number, since it uses less digits than its factorization.

2136784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10294 (or 10288 counting only the distinct ones).

The product of its digits is 8064, while the sum is 31.

The square root of 2136784 is about 1461.7742643787. The cubic root of 2136784 is about 128.8012885176.

The spelling of 2136784 in words is "two million, one hundred thirty-six thousand, seven hundred eighty-four".