1643052 has 24 divisors (see below), whose sum is σ = 3855600. Its totient is φ = 544576.

The previous prime is 1643039. The next prime is 1643069. The reversal of 1643052 is 2503461.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2974 + ... + 3482.

It is an arithmetic number, because the mean of its divisors is an integer number (160650).

2^1643052 is an apocalyptic number.

1643052 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1643052 is an abundant number, since it is smaller than the sum of its proper divisors (2212548).

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

1643052 is a wasteful number, since it uses less digits than its factorization.

1643052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 785 (or 783 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 1643052 is about 1281.8158994177. The cubic root of 1643052 is about 118.0004787877. Note that the first 3 decimals are identical.

The spelling of 1643052 in words is "one million, six hundred forty-three thousand, fifty-two".