71622512 has 40 divisors (see below), whose sum is σ = 150511200. Its totient is φ = 32820480.

The previous prime is 71622511. The next prime is 71622521. The reversal of 71622512 is 21522617.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71622511) 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 7 ways as a sum of consecutive naturals, for example, 29837 + ... + 32147.

It is an arithmetic number, because the mean of its divisors is an integer number (3762780).

Almost surely, 2^71622512 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 71622512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75255600).

71622512 is an abundant number, since it is smaller than the sum of its proper divisors (78888688).

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

71622512 is a wasteful number, since it uses less digits than its factorization.

71622512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2481 (or 2475 counting only the distinct ones).

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

The square root of 71622512 is about 8463.0084485365. The cubic root of 71622512 is about 415.2884470700.

The spelling of 71622512 in words is "seventy-one million, six hundred twenty-two thousand, five hundred twelve".