1920648 has 32 divisors (see below), whose sum is σ = 4867200. Its totient is φ = 631488.

The previous prime is 1920637. The next prime is 1920671. The reversal of 1920648 is 8460291.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1390 + ... + 2402.

It is an arithmetic number, because the mean of its divisors is an integer number (152100).

2^1920648 is an apocalyptic number.

It is an amenable number.

1920648 is an abundant number, since it is smaller than the sum of its proper divisors (2946552).

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

1920648 is a wasteful number, since it uses less digits than its factorization.

1920648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1101 (or 1097 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 1920648 is about 1385.8744531883. The cubic root of 1920648 is about 124.3032812117.

The spelling of 1920648 in words is "one million, nine hundred twenty thousand, six hundred forty-eight".