71841408 has 64 divisors (see below), whose sum is σ = 194020320. Its totient is φ = 23546880.

The previous prime is 71841391. The next prime is 71841437. The reversal of 71841408 is 80414817.

It is a tau number, because it is divible by the number of its divisors (64).

It is a super-2 number, since 2×71841408² = 10322375806844928, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21891 + ... + 24957.

Almost surely, 2^71841408 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 71841408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97010160).

71841408 is an abundant number, since it is smaller than the sum of its proper divisors (122178912).

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

71841408 is a wasteful number, since it uses less digits than its factorization.

71841408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3145 (or 3133 counting only the distinct ones).

The product of its (nonzero) digits is 7168, while the sum is 33.

The square root of 71841408 is about 8475.9310992952. The cubic root of 71841408 is about 415.7110913149.

The spelling of 71841408 in words is "seventy-one million, eight hundred forty-one thousand, four hundred eight".