1729144 has 16 divisors (see below), whose sum is σ = 3256920. Its totient is φ = 860640.

The previous prime is 1729141. The next prime is 1729153. The reversal of 1729144 is 4419271.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1729141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2322 + ... + 2974.

2^1729144 is an apocalyptic number.

It is an amenable number.

1729144 is a deficient number, since it is larger than the sum of its proper divisors (1527776).

1729144 is a wasteful number, since it uses less digits than its factorization.

1729144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 990 (or 986 counting only the distinct ones).

The product of its digits is 2016, while the sum is 28.

The square root of 1729144 is about 1314.9692011602. The cubic root of 1729144 is about 120.0264756397.

It can be divided in two parts, 172 and 9144, that added together give a triangular number (9316 = T₁₃₆).

The spelling of 1729144 in words is "one million, seven hundred twenty-nine thousand, one hundred forty-four".