71041520 has 120 divisors (see below), whose sum is σ = 187019280. Its totient is φ = 25062400.

The previous prime is 71041519. The next prime is 71041541. The reversal of 71041520 is 2514017.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 71041492 and 71041501.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 396791 + ... + 396969.

It is an arithmetic number, because the mean of its divisors is an integer number (1558494).

Almost surely, 2^71041520 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 71041520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (93509640).

71041520 is an abundant number, since it is smaller than the sum of its proper divisors (115977760).

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

71041520 is a wasteful number, since it uses less digits than its factorization.

71041520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255 (or 238 counting only the distinct ones).

The product of its (nonzero) digits is 280, while the sum is 20.

The square root of 71041520 is about 8428.6131718095. The cubic root of 71041520 is about 414.1624759987.

Adding to 71041520 its reverse (2514017), we get a palindrome (73555537).

The spelling of 71041520 in words is "seventy-one million, forty-one thousand, five hundred twenty".