2733921 has 24 divisors (see below), whose sum is σ = 4193280. Its totient is φ = 1713600.

The previous prime is 2733901. The next prime is 2733931. The reversal of 2733921 is 1293372.

2733921 is a `hidden beast` number, since 273 + 392 + 1 = 666.

It is not a de Polignac number, because 2733921 - 2¹⁰ = 2732897 is a prime.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (2733901) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11320 + ... + 11558.

It is an arithmetic number, because the mean of its divisors is an integer number (174720).

2^2733921 is an apocalyptic number.

It is an amenable number.

2733921 is a deficient number, since it is larger than the sum of its proper divisors (1459359).

2733921 is a wasteful number, since it uses less digits than its factorization.

2733921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317 (or 314 counting only the distinct ones).

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

The square root of 2733921 is about 1653.4572870201. The cubic root of 2733921 is about 139.8283781352.

The spelling of 2733921 in words is "two million, seven hundred thirty-three thousand, nine hundred twenty-one".