71380788 has 12 divisors (see below), whose sum is σ = 166555200. Its totient is φ = 23793592.

The previous prime is 71380781. The next prime is 71380801. The reversal of 71380788 is 88708317.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71380781) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 2974188 + ... + 2974211.

It is an arithmetic number, because the mean of its divisors is an integer number (13879600).

Almost surely, 2^71380788 is an apocalyptic number.

It is an amenable number.

71380788 is an abundant number, since it is smaller than the sum of its proper divisors (95174412).

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

71380788 is a wasteful number, since it uses less digits than its factorization.

71380788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5948406 (or 5948404 counting only the distinct ones).

The product of its (nonzero) digits is 75264, while the sum is 42.

The square root of 71380788 is about 8448.7151685922. The cubic root of 71380788 is about 414.8207248115.

The spelling of 71380788 in words is "seventy-one million, three hundred eighty thousand, seven hundred eighty-eight".