71416520 has 96 divisors (see below), whose sum is σ = 189604800. Its totient is φ = 24135552.

The previous prime is 71416517. The next prime is 71416561. The reversal of 71416520 is 2561417.

It is a self number, because there is not a number n which added to its sum of digits gives 71416520.

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 23 ways as a sum of consecutive naturals, for example, 162461 + ... + 162899.

It is an arithmetic number, because the mean of its divisors is an integer number (1975050).

Almost surely, 2^71416520 is an apocalyptic number.

71416520 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 71416520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (94802400).

71416520 is an abundant number, since it is smaller than the sum of its proper divisors (118188280).

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

71416520 is a wasteful number, since it uses less digits than its factorization.

71416520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 547 (or 536 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 26.

The square root of 71416520 is about 8450.8295450802. The cubic root of 71416520 is about 414.8899306485.

Adding to 71416520 its reverse (2561417), we get a palindrome (73977937).

The spelling of 71416520 in words is "seventy-one million, four hundred sixteen thousand, five hundred twenty".