1729480 has 16 divisors (see below), whose sum is σ = 3891420. Its totient is φ = 691776.

The previous prime is 1729477. The next prime is 1729487. The reversal of 1729480 is 849271.

It can be written as a sum of positive squares in 2 ways, for example, as 1493284 + 236196 = 1222^2 + 486^2 .

It is a super-2 number, since 2×1729480² = 5982202140800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1729487) 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, 21579 + ... + 21658.

2^1729480 is an apocalyptic number.

1729480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1729480 is an abundant number, since it is smaller than the sum of its proper divisors (2161940).

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

1729480 is a wasteful number, since it uses less digits than its factorization.

1729480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43248 (or 43244 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 1729480 is about 1315.0969546007. The cubic root of 1729480 is about 120.0342494831.

It can be divided in two parts, 1729 and 480, that added together give a square (2209 = 47²).

The spelling of 1729480 in words is "one million, seven hundred twenty-nine thousand, four hundred eighty".