2156733 has 24 divisors (see below), whose sum is σ = 3362240. Its totient is φ = 1366200.

The previous prime is 2156731. The next prime is 2156753. The reversal of 2156733 is 3376512.

It is a happy number.

2156733 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2156733 - 2¹ = 2156731 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 2²¹ + 1 + 5³ + 6² + 7³ + 3³ + 3¹⁰ .

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2156697 and 2156706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2156731) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 14208 + ... + 14358.

2^2156733 is an apocalyptic number.

2156733 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

2156733 is a deficient number, since it is larger than the sum of its proper divisors (1205507).

2156733 is a wasteful number, since it uses less digits than its factorization.

2156733 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206 (or 177 counting only the distinct ones).

The product of its digits is 3780, while the sum is 27.

The square root of 2156733 is about 1468.5819691117. The cubic root of 2156733 is about 129.2008768675.

The spelling of 2156733 in words is "two million, one hundred fifty-six thousand, seven hundred thirty-three".