71172608 has 120 divisors (see below), whose sum is σ = 167080452. Its totient is φ = 30081024.

The previous prime is 71172593. The next prime is 71172631. The reversal of 71172608 is 80627117.

It can be written as a sum of positive squares in 6 ways, for example, as 57274624 + 13897984 = 7568^2 + 3728^2 .

It is a Harshad number since it is a multiple of its sum of digits (32).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1923566 + ... + 1923602.

Almost surely, 2^71172608 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 71172608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83540226).

71172608 is an abundant number, since it is smaller than the sum of its proper divisors (95907844).

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

71172608 is a wasteful number, since it uses less digits than its factorization.

71172608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102 (or 69 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 32.

The square root of 71172608 is about 8436.3859560833. The cubic root of 71172608 is about 414.4170612575.

The spelling of 71172608 in words is "seventy-one million, one hundred seventy-two thousand, six hundred eight".