71398 has 8 divisors (see below), whose sum is σ = 110880. Its totient is φ = 34440.

The previous prime is 71389. The next prime is 71399. The reversal of 71398 is 89317.

71398 is nontrivially palindromic in base 13.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71399) by changing a digit.

71398 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 3 ways as a sum of consecutive naturals, for example, 558 + ... + 673.

It is an arithmetic number, because the mean of its divisors is an integer number (13860).

2⁷¹³⁹⁸ is an apocalyptic number.

71398 is a deficient number, since it is larger than the sum of its proper divisors (39482).

71398 is a wasteful number, since it uses less digits than its factorization.

71398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1262.

The product of its digits is 1512, while the sum is 28.

The square root of 71398 is about 267.2040418856. The cubic root of 71398 is about 41.4854063943.

The spelling of 71398 in words is "seventy-one thousand, three hundred ninety-eight".