71908470 has 96 divisors (see below), whose sum is σ = 202748832. Its totient is φ = 17611776.

The previous prime is 71908457. The next prime is 71908481. The reversal of 71908470 is 7480917.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 65244 + ... + 66336.

It is an arithmetic number, because the mean of its divisors is an integer number (2111967).

Almost surely, 2^71908470 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 71908470, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (101374416).

71908470 is an abundant number, since it is smaller than the sum of its proper divisors (130840362).

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

71908470 is a wasteful number, since it uses less digits than its factorization.

71908470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1166 (or 1163 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 36.

The square root of 71908470 is about 8479.8862020666. The cubic root of 71908470 is about 415.8404027519.

The spelling of 71908470 in words is "seventy-one million, nine hundred eight thousand, four hundred seventy".