71909152 has 48 divisors (see below), whose sum is σ = 163658880. Its totient is φ = 30463488.

The previous prime is 71909143. The next prime is 71909171. The reversal of 71909152 is 25190917.

It is a super-2 number, since 2×71909152² = 10341852282718208, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18133 + ... + 21739.

It is an arithmetic number, because the mean of its divisors is an integer number (3409560).

Almost surely, 2^71909152 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 71909152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81829440).

71909152 is an abundant number, since it is smaller than the sum of its proper divisors (91749728).

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

71909152 is a wasteful number, since it uses less digits than its factorization.

71909152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3713 (or 3705 counting only the distinct ones).

The product of its (nonzero) digits is 5670, while the sum is 34.

The square root of 71909152 is about 8479.9264147751. The cubic root of 71909152 is about 415.8417173966.

It can be divided in two parts, 7190915 and 2, that added together give a palindrome (7190917).

The spelling of 71909152 in words is "seventy-one million, nine hundred nine thousand, one hundred fifty-two".