1920723 has 8 divisors (see below), whose sum is σ = 2926848. Its totient is φ = 1097544.

The previous prime is 1920713. The next prime is 1920731. The reversal of 1920723 is 3270291.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1920723 - 2⁹ = 1920211 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1920693 and 1920702.

It is not an unprimeable number, because it can be changed into a prime (1920713) by changing a digit.

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, 45711 + ... + 45752.

It is an arithmetic number, because the mean of its divisors is an integer number (365856).

2^1920723 is an apocalyptic number.

1920723 is a deficient number, since it is larger than the sum of its proper divisors (1006125).

1920723 is an equidigital number, since it uses as much as digits as its factorization.

1920723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91473.

The product of its (nonzero) digits is 756, while the sum is 24.

The square root of 1920723 is about 1385.9015116523. The cubic root of 1920723 is about 124.3048991769.

The spelling of 1920723 in words is "one million, nine hundred twenty thousand, seven hundred twenty-three".