71089902 has 24 divisors (see below), whose sum is σ = 165876984. Its totient is φ = 21873744.

The previous prime is 71089877. The next prime is 71089927. The reversal of 71089902 is 20998017.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (71089877) and next prime (71089927).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 151668 + ... + 152135.

It is an arithmetic number, because the mean of its divisors is an integer number (6911541).

Almost surely, 2^71089902 is an apocalyptic number.

71089902 is an abundant number, since it is smaller than the sum of its proper divisors (94787082).

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

71089902 is a wasteful number, since it uses less digits than its factorization.

71089902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 303824 (or 303821 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 36.

The square root of 71089902 is about 8431.4827877426. The cubic root of 71089902 is about 414.2564748403.

The spelling of 71089902 in words is "seventy-one million, eighty-nine thousand, nine hundred two".