71408 has 10 divisors (see below), whose sum is σ = 138384. Its totient is φ = 35696.

The previous prime is 71399. The next prime is 71411. The reversal of 71408 is 80417.

It is a happy number.

It is a plaindrome in base 13.

It is a self number, because there is not a number n which added to its sum of digits gives 71408.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2216 + ... + 2247.

2⁷¹⁴⁰⁸ is an apocalyptic number.

It is an amenable number.

71408 is a deficient number, since it is larger than the sum of its proper divisors (66976).

71408 is a wasteful number, since it uses less digits than its factorization.

71408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4471 (or 4465 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 20.

The square root of 71408 is about 267.2227535222. Note that the first 3 decimals coincide. The cubic root of 71408 is about 41.4873431185.

Subtracting 71408 from its reverse (80417), we obtain a palindrome (9009).

The spelling of 71408 in words is "seventy-one thousand, four hundred eight".