71768020 has 12 divisors (see below), whose sum is σ = 150712884. Its totient is φ = 28707200.

The previous prime is 71768017. The next prime is 71768051. The reversal of 71768020 is 2086717.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 28366276 + 43401744 = 5326^2 + 6588^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1794181 + ... + 1794220.

It is an arithmetic number, because the mean of its divisors is an integer number (12559407).

Almost surely, 2^71768020 is an apocalyptic number.

It is an amenable number.

71768020 is an abundant number, since it is smaller than the sum of its proper divisors (78944864).

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

71768020 is a wasteful number, since it uses less digits than its factorization.

71768020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3588410 (or 3588408 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 31.

The square root of 71768020 is about 8471.6007932385. The cubic root of 71768020 is about 415.5694895996.

The spelling of 71768020 in words is "seventy-one million, seven hundred sixty-eight thousand, twenty".