71612120 has 16 divisors (see below), whose sum is σ = 161127360. Its totient is φ = 28644832.

The previous prime is 71612119. The next prime is 71612129. The reversal of 71612120 is 2121617.

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 = 71612092 and 71612101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71612129) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 895112 + ... + 895191.

It is an arithmetic number, because the mean of its divisors is an integer number (10070460).

Almost surely, 2^71612120 is an apocalyptic number.

It is an amenable number.

71612120 is an abundant number, since it is smaller than the sum of its proper divisors (89515240).

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

71612120 is a wasteful number, since it uses less digits than its factorization.

71612120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1790314 (or 1790310 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 20.

The square root of 71612120 is about 8462.3944601986. The cubic root of 71612120 is about 415.2683608049.

Adding to 71612120 its reverse (2121617), we get a palindrome (73733737).

The spelling of 71612120 in words is "seventy-one million, six hundred twelve thousand, one hundred twenty".