71378748 has 72 divisors (see below), whose sum is σ = 207698400. Its totient is φ = 20246400.

The previous prime is 71378719. The next prime is 71378761. The reversal of 71378748 is 84787317.

It is a happy number.

It is a congruent number.

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 23 ways as a sum of consecutive naturals, for example, 36598 + ... + 38498.

It is an arithmetic number, because the mean of its divisors is an integer number (2884700).

Almost surely, 2^71378748 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 71378748, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (103849200).

71378748 is an abundant number, since it is smaller than the sum of its proper divisors (136319652).

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

71378748 is a wasteful number, since it uses less digits than its factorization.

71378748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2067 (or 2062 counting only the distinct ones).

The product of its digits is 263424, while the sum is 45.

The square root of 71378748 is about 8448.5944393136. The cubic root of 71378748 is about 414.8167730369.

The spelling of 71378748 in words is "seventy-one million, three hundred seventy-eight thousand, seven hundred forty-eight".