71867930 has 16 divisors (see below), whose sum is σ = 129781224. Its totient is φ = 28654080.

The previous prime is 71867911. The next prime is 71867969. The reversal of 71867930 is 3976817.

It can be written as a sum of positive squares in 4 ways, for example, as 40742689 + 31125241 = 6383^2 + 5579^2 .

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, 8351 + ... + 14610.

Almost surely, 2^71867930 is an apocalyptic number.

71867930 is a deficient number, since it is larger than the sum of its proper divisors (57913294).

71867930 is a wasteful number, since it uses less digits than its factorization.

71867930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23281.

The product of its (nonzero) digits is 63504, while the sum is 41.

The square root of 71867930 is about 8477.4955028003. The cubic root of 71867930 is about 415.7622416351.

The spelling of 71867930 in words is "seventy-one million, eight hundred sixty-seven thousand, nine hundred thirty".