2889729 has 32 divisors (see below), whose sum is σ = 4646400. Its totient is φ = 1769040.

The previous prime is 2889707. The next prime is 2889739. The reversal of 2889729 is 9279882.

2889729 = T₁₀₂ + T₁₀₃ + ... + T₂₆₃.

It is not a de Polignac number, because 2889729 - 2⁹ = 2889217 is a prime.

It is an Ulam number.

2889729 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2889739) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 21994 + ... + 22124.

It is an arithmetic number, because the mean of its divisors is an integer number (145200).

It is a Proth number, since it is equal to 1411 ⋅ 2¹¹ + 1 and 1411 < 2¹¹.

2^2889729 is an apocalyptic number.

It is an amenable number.

2889729 is a deficient number, since it is larger than the sum of its proper divisors (1756671).

2889729 is a wasteful number, since it uses less digits than its factorization.

2889729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202 (or 196 counting only the distinct ones).

The product of its digits is 145152, while the sum is 45.

The square root of 2889729 is about 1699.9202922490. The cubic root of 2889729 is about 142.4357605187.

The spelling of 2889729 in words is "two million, eight hundred eighty-nine thousand, seven hundred twenty-nine".