71248636 has 12 divisors (see below), whose sum is σ = 126798840. Its totient is φ = 35020400.

The previous prime is 71248607. The next prime is 71248637. The reversal of 71248636 is 63684217.

It is a junction number, because it is equal to n+sod(n) for n = 71248595 and 71248604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71248637) 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, 150715 + ... + 151186.

It is an arithmetic number, because the mean of its divisors is an integer number (10566570).

Almost surely, 2^71248636 is an apocalyptic number.

It is an amenable number.

71248636 is a deficient number, since it is larger than the sum of its proper divisors (55550204).

71248636 is a wasteful number, since it uses less digits than its factorization.

71248636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 301964 (or 301962 counting only the distinct ones).

The product of its digits is 48384, while the sum is 37.

The square root of 71248636 is about 8440.8907112934. The cubic root of 71248636 is about 414.5645716034.

The spelling of 71248636 in words is "seventy-one million, two hundred forty-eight thousand, six hundred thirty-six".