2729890 has 8 divisors (see below), whose sum is σ = 4913820. Its totient is φ = 1091952.

The previous prime is 2729887. The next prime is 2729917. The reversal of 2729890 is 989272.

2729890 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 2331729 + 398161 = 1527^2 + 631^2 .

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

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

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 136485 + ... + 136504.

2^2729890 is an apocalyptic number.

2729890 is a deficient number, since it is larger than the sum of its proper divisors (2183930).

2729890 is a wasteful number, since it uses less digits than its factorization.

2729890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272996.

The product of its (nonzero) digits is 18144, while the sum is 37.

The square root of 2729890 is about 1652.2378763362. The cubic root of 2729890 is about 139.7596215226.

The spelling of 2729890 in words is "two million, seven hundred twenty-nine thousand, eight hundred ninety".