71330 has 16 divisors (see below), whose sum is σ = 146880. Its totient is φ = 24432.

The previous prime is 71329. The next prime is 71333. The reversal of 71330 is 3317.

71330 = 27² + 28² + ... + 61².

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is an Ulam number.

It is a zygodrome in base 9.

It is not an unprimeable number, because it can be changed into a prime (71333) 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, 440 + ... + 579.

It is an arithmetic number, because the mean of its divisors is an integer number (9180).

2⁷¹³³⁰ is an apocalyptic number.

71330 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

71330 is an abundant number, since it is smaller than the sum of its proper divisors (75550).

It is a weird number, because it is abundant, but not a pseudoperfect number.

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73440).

71330 is a wasteful number, since it uses less digits than its factorization.

71330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1033.

The product of its (nonzero) digits is 63, while the sum is 14.

The square root of 71330 is about 267.0767679900. The cubic root of 71330 is about 41.4722318717.

Adding to 71330 its reverse (3317), we get a palindrome (74647).

The spelling of 71330 in words is "seventy-one thousand, three hundred thirty".