71001904 has 40 divisors (see below), whose sum is σ = 142812288. Its totient is φ = 34160640.

The previous prime is 71001893. The next prime is 71001929. The reversal of 71001904 is 40910017.

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 7 ways as a sum of consecutive naturals, for example, 127194 + ... + 127750.

Almost surely, 2^71001904 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 71001904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71406144).

71001904 is an abundant number, since it is smaller than the sum of its proper divisors (71810384).

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

71001904 is a wasteful number, since it uses less digits than its factorization.

71001904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 853 (or 847 counting only the distinct ones).

The product of its (nonzero) digits is 252, while the sum is 22.

The square root of 71001904 is about 8426.2627540328. The cubic root of 71001904 is about 414.0854763726.

The spelling of 71001904 in words is "seventy-one million, one thousand, nine hundred four".