71508012 has 48 divisors (see below), whose sum is σ = 175967232. Its totient is φ = 22556160.

The previous prime is 71508007. The next prime is 71508023. The reversal of 71508012 is 21080517.

It is a super-2 number, since 2×71508012² = 10226791560384288, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25437 + ... + 28107.

It is an arithmetic number, because the mean of its divisors is an integer number (3665984).

Almost surely, 2^71508012 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 71508012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87983616).

71508012 is an abundant number, since it is smaller than the sum of its proper divisors (104459220).

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

71508012 is a wasteful number, since it uses less digits than its factorization.

71508012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2798 (or 2796 counting only the distinct ones).

The product of its (nonzero) digits is 560, while the sum is 24.

The square root of 71508012 is about 8456.2410088644. The cubic root of 71508012 is about 415.0670274473.

Adding to 71508012 its reverse (21080517), we get a palindrome (92588529).

The spelling of 71508012 in words is "seventy-one million, five hundred eight thousand, twelve".