1920940 has 24 divisors (see below), whose sum is σ = 4610592. Its totient is φ = 658560.

The previous prime is 1920923. The next prime is 1920959. The reversal of 1920940 is 490291.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6721 + ... + 7000.

It is an arithmetic number, because the mean of its divisors is an integer number (192108).

2^1920940 is an apocalyptic number.

1920940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1920940 is an abundant number, since it is smaller than the sum of its proper divisors (2689652).

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

1920940 is a wasteful number, since it uses less digits than its factorization.

1920940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13737 (or 13735 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 25.

The square root of 1920940 is about 1385.9797978326. The cubic root of 1920940 is about 124.3095802522.

The spelling of 1920940 in words is "one million, nine hundred twenty thousand, nine hundred forty".