71072052 has 12 divisors (see below), whose sum is σ = 165834816. Its totient is φ = 23690680.

The previous prime is 71072051. The next prime is 71072081. The reversal of 71072052 is 25027017.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71072051) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 2961324 + ... + 2961347.

It is an arithmetic number, because the mean of its divisors is an integer number (13819568).

Almost surely, 2^71072052 is an apocalyptic number.

It is an amenable number.

71072052 is an abundant number, since it is smaller than the sum of its proper divisors (94762764).

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

71072052 is a wasteful number, since it uses less digits than its factorization.

71072052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5922678 (or 5922676 counting only the distinct ones).

The product of its (nonzero) digits is 980, while the sum is 24.

The square root of 71072052 is about 8430.4241886159. The cubic root of 71072052 is about 414.2217999810.

Adding to 71072052 its reverse (25027017), we get a palindrome (96099069).

The spelling of 71072052 in words is "seventy-one million, seventy-two thousand, fifty-two".