30726 has 16 divisors (see below), whose sum is σ = 68400.
Its totient is φ = 10224.
The previous prime is 30713. The next prime is 30727. The reversal of 30726 is 62703.
It is a Harshad number since it is a multiple of its sum of digits (18).
It is a junction number, because it is equal to n+sod(n) for n = 30699 and 30708.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (30727) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 231 + ... + 338.
It is an arithmetic number, because the mean of its divisors is an integer number (4275).
230726 is an apocalyptic number.
30726 is an abundant number, since it is smaller than the sum of its proper divisors (37674).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34200).
30726 is a wasteful number, since it uses less digits than its factorization.
30726 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 580 (or 574 counting only the distinct ones).
The product of its (nonzero) digits is 252, while the sum is 18.
The square root of 30726 is about 175.2883338959.
The cubic root of 30726 is about 31.3209799902.
It can be divided in two parts, 307 and 26, that added together give a palindrome (333).
The spelling of 30726 in words is "thirty thousand, seven hundred twenty-six".