71239104 has 84 divisors (see below), whose sum is σ = 205357984. Its totient is φ = 23611392.

The previous prime is 71239087. The next prime is 71239121. The reversal of 71239104 is 40193217.

It is an interprime number because it is at equal distance from previous prime (71239087) and next prime (71239121).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 193929 + ... + 194295.

Almost surely, 2^71239104 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 71239104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (102678992).

71239104 is an abundant number, since it is smaller than the sum of its proper divisors (134118880).

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

71239104 is a wasteful number, since it uses less digits than its factorization.

71239104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 722 (or 709 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 27.

The square root of 71239104 is about 8440.3260600524. The cubic root of 71239104 is about 414.5460832694.

The spelling of 71239104 in words is "seventy-one million, two hundred thirty-nine thousand, one hundred four".