1913320 has 32 divisors (see below), whose sum is σ = 4446720. Its totient is φ = 740160.

The previous prime is 1913297. The next prime is 1913341. The reversal of 1913320 is 233191.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 469 + ... + 2011.

It is an arithmetic number, because the mean of its divisors is an integer number (138960).

2^1913320 is an apocalyptic number.

1913320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1913320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2223360).

1913320 is an abundant number, since it is smaller than the sum of its proper divisors (2533400).

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

1913320 is a wasteful number, since it uses less digits than its factorization.

1913320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1585 (or 1581 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 19.

The square root of 1913320 is about 1383.2281084478. The cubic root of 1913320 is about 124.1449916872.

The spelling of 1913320 in words is "one million, nine hundred thirteen thousand, three hundred twenty".