1628480 has 56 divisors (see below), whose sum is σ = 4437888. Its totient is φ = 557568.

The previous prime is 1628477. The next prime is 1628489. The reversal of 1628480 is 848261.

It is a tau number, because it is divible by the number of its divisors (56).

It is a super-2 number, since 2×1628480² = 5303894220800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1628489) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1877 + ... + 2603.

It is an arithmetic number, because the mean of its divisors is an integer number (79248).

2^1628480 is an apocalyptic number.

1628480 is a gapful number since it is divisible by the number (10) 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 1628480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2218944).

1628480 is an abundant number, since it is smaller than the sum of its proper divisors (2809408).

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

1628480 is an equidigital number, since it uses as much as digits as its factorization.

1628480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 751 (or 741 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 29.

The square root of 1628480 is about 1276.1191166972. The cubic root of 1628480 is about 117.6505991091.

The spelling of 1628480 in words is "one million, six hundred twenty-eight thousand, four hundred eighty".