1628916 has 12 divisors (see below), whose sum is σ = 3800832. Its totient is φ = 542968.

The previous prime is 1628909. The next prime is 1628917. The reversal of 1628916 is 6198261.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1628917) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67860 + ... + 67883.

It is an arithmetic number, because the mean of its divisors is an integer number (316736).

2^1628916 is an apocalyptic number.

It is an amenable number.

1628916 is an abundant number, since it is smaller than the sum of its proper divisors (2171916).

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

1628916 is a wasteful number, since it uses less digits than its factorization.

1628916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135750 (or 135748 counting only the distinct ones).

The product of its digits is 5184, while the sum is 33.

The square root of 1628916 is about 1276.2899357121. The cubic root of 1628916 is about 117.6610978736.

The spelling of 1628916 in words is "one million, six hundred twenty-eight thousand, nine hundred sixteen".