841720 has 32 divisors (see below), whose sum is σ = 2067120. Its totient is φ = 305920.

The previous prime is 841697. The next prime is 841727. The reversal of 841720 is 27148.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 841691 and 841700.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (841727) by changing a digit.

841720 is an untouchable number, because it is not equal to the sum of proper divisors of any 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, 517 + ... + 1396.

2⁸⁴¹⁷²⁰ is an apocalyptic number.

It is an amenable number.

841720 is an abundant number, since it is smaller than the sum of its proper divisors (1225400).

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

841720 is a wasteful number, since it uses less digits than its factorization.

841720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1935 (or 1931 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 22.

The square root of 841720 is about 917.4529960712. The cubic root of 841720 is about 94.4182359676.

Adding to 841720 its reverse (27148), we get a palindrome (868868).

The spelling of 841720 in words is "eight hundred forty-one thousand, seven hundred twenty".