71989102 has 8 divisors (see below), whose sum is σ = 108152496. Its totient is φ = 35938272.

The previous prime is 71989097. The next prime is 71989111. The reversal of 71989102 is 20198917.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26523 + ... + 29110.

It is an arithmetic number, because the mean of its divisors is an integer number (13519062).

Almost surely, 2^71989102 is an apocalyptic number.

71989102 is a deficient number, since it is larger than the sum of its proper divisors (36163394).

71989102 is a wasteful number, since it uses less digits than its factorization.

71989102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56282.

The product of its (nonzero) digits is 9072, while the sum is 37.

The square root of 71989102 is about 8484.6391791284. The cubic root of 71989102 is about 415.9957739647.

The spelling of 71989102 in words is "seventy-one million, nine hundred eighty-nine thousand, one hundred two".