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722106 = 232711521
BaseRepresentation
bin10110000010010111010
31100200112200
42300102322
5141101411
623251030
76065160
oct2602272
91320480
10722106
11453590
122a9a76
131c38a8
1414b230
15e3e56
hexb04ba

722106 has 48 divisors (see below), whose sum is σ = 1954368. Its totient is φ = 187200.

The previous prime is 722093. The next prime is 722119. The reversal of 722106 is 601227.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (722093) and next prime (722119).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a Curzon number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 722106.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1126 + ... + 1646.

It is an arithmetic number, because the mean of its divisors is an integer number (40716).

2722106 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 722106, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (977184).

722106 is an abundant number, since it is smaller than the sum of its proper divisors (1232262).

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

722106 is a wasteful number, since it uses less digits than its factorization.

722106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 547 (or 544 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 18.

The square root of 722106 is about 849.7682036885. The cubic root of 722106 is about 89.7153972592.

It can be divided in two parts, 722 and 106, that added together give a palindrome (828).

The spelling of 722106 in words is "seven hundred twenty-two thousand, one hundred six".