1628736 has 56 divisors (see below), whose sum is σ = 4572000. Its totient is φ = 509952.

The previous prime is 1628729. The next prime is 1628747. The reversal of 1628736 is 6378261.

It is a junction number, because it is equal to n+sod(n) for n = 1628697 and 1628706.

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, 3015 + ... + 3513.

2^1628736 is an apocalyptic number.

1628736 is a gapful number since it is divisible by the number (16) 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 1628736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2286000).

1628736 is an abundant number, since it is smaller than the sum of its proper divisors (2943264).

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

1628736 is a wasteful number, since it uses less digits than its factorization.

1628736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 531 (or 521 counting only the distinct ones).

The product of its digits is 12096, while the sum is 33.

The square root of 1628736 is about 1276.2194168716. The cubic root of 1628736 is about 117.6567637484.

The spelling of 1628736 in words is "one million, six hundred twenty-eight thousand, seven hundred thirty-six".