71152989 has 8 divisors (see below), whose sum is σ = 94913280. Its totient is φ = 47414016.

The previous prime is 71152987. The next prime is 71152993. The reversal of 71152989 is 98925117.

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

It is not a de Polignac number, because 71152989 - 2¹ = 71152987 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 71152989.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71152981) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5757 + ... + 13245.

It is an arithmetic number, because the mean of its divisors is an integer number (11864160).

Almost surely, 2^71152989 is an apocalyptic number.

It is an amenable number.

71152989 is a deficient number, since it is larger than the sum of its proper divisors (23760291).

71152989 is a wasteful number, since it uses less digits than its factorization.

71152989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10659.

The product of its digits is 45360, while the sum is 42.

The square root of 71152989 is about 8435.2231150101. The cubic root of 71152989 is about 414.3789792119.

The spelling of 71152989 in words is "seventy-one million, one hundred fifty-two thousand, nine hundred eighty-nine".