71122072 has 32 divisors (see below), whose sum is σ = 159033600. Its totient is φ = 29155104.

The previous prime is 71122027. The next prime is 71122147. The reversal of 71122072 is 27022117.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 26322 + ... + 28897.

It is an arithmetic number, because the mean of its divisors is an integer number (4969800).

Almost surely, 2^71122072 is an apocalyptic number.

It is an amenable number.

71122072 is an abundant number, since it is smaller than the sum of its proper divisors (87911528).

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

71122072 is a wasteful number, since it uses less digits than its factorization.

71122072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55255 (or 55251 counting only the distinct ones).

The product of its (nonzero) digits is 392, while the sum is 22.

The square root of 71122072 is about 8433.3903028379. The cubic root of 71122072 is about 414.3189526358.

Adding to 71122072 its reverse (27022117), we get a palindrome (98144189).

The spelling of 71122072 in words is "seventy-one million, one hundred twenty-two thousand, seventy-two".