1685472 has 48 divisors (see below), whose sum is σ = 4494672. Its totient is φ = 552960.

The previous prime is 1685459. The next prime is 1685473. The reversal of 1685472 is 2745861.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1685473) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9222 + ... + 9402.

It is an arithmetic number, because the mean of its divisors is an integer number (93639).

2^1685472 is an apocalyptic number.

1685472 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1685472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2247336).

1685472 is an abundant number, since it is smaller than the sum of its proper divisors (2809200).

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

1685472 is a wasteful number, since it uses less digits than its factorization.

1685472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291 (or 283 counting only the distinct ones).

The product of its digits is 13440, while the sum is 33.

The square root of 1685472 is about 1298.2572934515. The cubic root of 1685472 is about 119.0073671968.

The spelling of 1685472 in words is "one million, six hundred eighty-five thousand, four hundred seventy-two".