1949728 has 48 divisors (see below), whose sum is σ = 4354560. Its totient is φ = 851200.

The previous prime is 1949719. The next prime is 1949737. The reversal of 1949728 is 8279491.

It is an interprime number because it is at equal distance from previous prime (1949719) and next prime (1949737).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10113 + ... + 10303.

It is an arithmetic number, because the mean of its divisors is an integer number (90720).

2^1949728 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1949728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2177280).

1949728 is an abundant number, since it is smaller than the sum of its proper divisors (2404832).

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

1949728 is a wasteful number, since it uses less digits than its factorization.

1949728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 241 (or 233 counting only the distinct ones).

The product of its digits is 36288, while the sum is 40.

The square root of 1949728 is about 1396.3266093576. The cubic root of 1949728 is about 124.9274886116.

The spelling of 1949728 in words is "one million, nine hundred forty-nine thousand, seven hundred twenty-eight".