1967728 has 20 divisors (see below), whose sum is σ = 4357360. Its totient is φ = 843264.

The previous prime is 1967717. The next prime is 1967729. The reversal of 1967728 is 8277691.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1967729) 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, 8673 + ... + 8896.

It is an arithmetic number, because the mean of its divisors is an integer number (217868).

2^1967728 is an apocalyptic number.

It is an amenable number.

1967728 is an abundant number, since it is smaller than the sum of its proper divisors (2389632).

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

1967728 is a wasteful number, since it uses less digits than its factorization.

1967728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17584 (or 17578 counting only the distinct ones).

The product of its digits is 42336, while the sum is 40.

The square root of 1967728 is about 1402.7572847788. The cubic root of 1967728 is about 125.3107574648.

The spelling of 1967728 in words is "one million, nine hundred sixty-seven thousand, seven hundred twenty-eight".