1649328 has 20 divisors (see below), whose sum is σ = 4260888. Its totient is φ = 549760.

The previous prime is 1649327. The next prime is 1649341. The reversal of 1649328 is 8239461.

It is not an unprimeable number, because it can be changed into a prime (1649327) 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, 17133 + ... + 17228.

2^1649328 is an apocalyptic number.

It is an amenable number.

1649328 is an abundant number, since it is smaller than the sum of its proper divisors (2611560).

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

1649328 is a wasteful number, since it uses less digits than its factorization.

1649328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34372 (or 34366 counting only the distinct ones).

The product of its digits is 10368, while the sum is 33.

The square root of 1649328 is about 1284.2616555827. The cubic root of 1649328 is about 118.1505308607.

The spelling of 1649328 in words is "one million, six hundred forty-nine thousand, three hundred twenty-eight".