2729838 has 8 divisors (see below), whose sum is σ = 5459688. Its totient is φ = 909944.

The previous prime is 2729833. The next prime is 2729861. The reversal of 2729838 is 8389272.

It is a sphenic number, since it is the product of 3 distinct primes.

2729838 is an admirable number.

It is an Ulam number.

It is an alternating number because its digits alternate between even and odd.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2729796 and 2729805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2729833) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 227481 + ... + 227492.

It is an arithmetic number, because the mean of its divisors is an integer number (682461).

2^2729838 is an apocalyptic number.

2729838 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

2729838 is a wasteful number, since it uses less digits than its factorization.

2729838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 454978.

The product of its digits is 48384, while the sum is 39.

The square root of 2729838 is about 1652.2221400284. Note that the first 3 decimals coincide. The cubic root of 2729838 is about 139.7587341185.

The spelling of 2729838 in words is "two million, seven hundred twenty-nine thousand, eight hundred thirty-eight".