1617472 has 28 divisors (see below), whose sum is σ = 3251200. Its totient is φ = 798336.

The previous prime is 1617463. The next prime is 1617493. The reversal of 1617472 is 2747161.

1617472 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 1617472.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8029 + ... + 8227.

2^1617472 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1617472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1625600).

1617472 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1617472 is a wasteful number, since it uses less digits than its factorization.

1617472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 338 (or 328 counting only the distinct ones).

The product of its digits is 2352, while the sum is 28.

The square root of 1617472 is about 1271.7987262142. The cubic root of 1617472 is about 117.3849061621.

The spelling of 1617472 in words is "one million, six hundred seventeen thousand, four hundred seventy-two".