Search a number
-
+
531726 = 231317401
BaseRepresentation
bin10000001110100001110
31000000101120
42001310032
5114003401
615221410
74343136
oct2016416
91000346
10531726
11333548
12217866
13158040
14dbac6
15a7836
hex81d0e

531726 has 32 divisors (see below), whose sum is σ = 1215648. Its totient is φ = 153600.

The previous prime is 531701. The next prime is 531731. The reversal of 531726 is 627135.

It is an Ulam number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 531696 and 531705.

It is a congruent number.

It is an unprimeable number.

531726 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1126 + ... + 1526.

It is an arithmetic number, because the mean of its divisors is an integer number (37989).

2531726 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 531726, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (607824).

531726 is an abundant number, since it is smaller than the sum of its proper divisors (683922).

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

531726 is a wasteful number, since it uses less digits than its factorization.

531726 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 436.

The product of its digits is 1260, while the sum is 24.

The square root of 531726 is about 729.1954470511. The cubic root of 531726 is about 81.0144769125.

The spelling of 531726 in words is "five hundred thirty-one thousand, seven hundred twenty-six".

Divisors: 1 2 3 6 13 17 26 34 39 51 78 102 221 401 442 663 802 1203 1326 2406 5213 6817 10426 13634 15639 20451 31278 40902 88621 177242 265863 531726