1628748 has 60 divisors (see below), whose sum is σ = 4655112. Its totient is φ = 492480.

The previous prime is 1628747. The next prime is 1628773. The reversal of 1628748 is 8478261.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (1628747) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 3336 + ... + 3792.

2^1628748 is an apocalyptic number.

1628748 is a gapful number since it is divisible by the number (18) 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 1628748, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2327556).

1628748 is an abundant number, since it is smaller than the sum of its proper divisors (3026364).

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

1628748 is a wasteful number, since it uses less digits than its factorization.

1628748 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 484 (or 473 counting only the distinct ones).

The product of its digits is 21504, while the sum is 36.

The square root of 1628748 is about 1276.2241182488. The cubic root of 1628748 is about 117.6570527000.

The spelling of 1628748 in words is "one million, six hundred twenty-eight thousand, seven hundred forty-eight".