71000436 has 48 divisors (see below), whose sum is σ = 181100864. Its totient is φ = 21517056.

The previous prime is 71000429. The next prime is 71000453. The reversal of 71000436 is 63400017.

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 15 ways as a sum of consecutive naturals, for example, 7056 + ... + 13848.

Almost surely, 2^71000436 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 71000436, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90550432).

71000436 is an abundant number, since it is smaller than the sum of its proper divisors (110100428).

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

71000436 is a wasteful number, since it uses less digits than its factorization.

71000436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6880 (or 6878 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 21.

The square root of 71000436 is about 8426.1756449768. The cubic root of 71000436 is about 414.0826225446.

The spelling of 71000436 in words is "seventy-one million, four hundred thirty-six", and thus it is an aban number.