1643152 has 40 divisors (see below), whose sum is σ = 3856896. Its totient is φ = 662016.

The previous prime is 1643141. The next prime is 1643171. The reversal of 1643152 is 2513461.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1473 + ... + 2335.

2^1643152 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 1643152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1928448).

1643152 is an abundant number, since it is smaller than the sum of its proper divisors (2213744).

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

1643152 is a wasteful number, since it uses less digits than its factorization.

1643152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 895 (or 889 counting only the distinct ones).

The product of its digits is 720, while the sum is 22.

The square root of 1643152 is about 1281.8549059859. The cubic root of 1643152 is about 118.0028726678.

The spelling of 1643152 in words is "one million, six hundred forty-three thousand, one hundred fifty-two".