2133729 has 16 divisors (see below), whose sum is σ = 3404800. Its totient is φ = 1312848.

The previous prime is 2133713. The next prime is 2133739. The reversal of 2133729 is 9273312.

It is not a de Polignac number, because 2133729 - 2⁴ = 2133713 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a d-powerful number, because it can be written as 2 + 1 + 3 + 3⁹ + 7⁵ + 2²¹ + 9² .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2133739) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2689 + ... + 3390.

It is an arithmetic number, because the mean of its divisors is an integer number (212800).

2^2133729 is an apocalyptic number.

It is an amenable number.

2133729 is a deficient number, since it is larger than the sum of its proper divisors (1271071).

2133729 is a wasteful number, since it uses less digits than its factorization.

2133729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6101 (or 6095 counting only the distinct ones).

The product of its digits is 2268, while the sum is 27.

The square root of 2133729 is about 1460.7289276248. The cubic root of 2133729 is about 128.7398760381.

The spelling of 2133729 in words is "two million, one hundred thirty-three thousand, seven hundred twenty-nine".