1073720 has 32 divisors (see below), whose sum is σ = 2559600. Its totient is φ = 403968.

The previous prime is 1073717. The next prime is 1073729. The reversal of 1073720 is 273701.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 1073692 and 1073701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1073729) by changing a digit.

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, 110 + ... + 1469.

2^1073720 is an apocalyptic number.

1073720 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 1073720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1279800).

1073720 is an abundant number, since it is smaller than the sum of its proper divisors (1485880).

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

1073720 is a wasteful number, since it uses less digits than its factorization.

1073720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1607 (or 1603 counting only the distinct ones).

The product of its (nonzero) digits is 294, while the sum is 20.

The square root of 1073720 is about 1036.2046129988. The cubic root of 1073720 is about 102.3993062290.

The spelling of 1073720 in words is "one million, seventy-three thousand, seven hundred twenty".