71288469 has 24 divisors (see below), whose sum is σ = 119446080. Its totient is φ = 40125888.

The previous prime is 71288449. The next prime is 71288471. The reversal of 71288469 is 96488217.

It is not a de Polignac number, because 71288469 - 2¹¹ = 71286421 is a prime.

It is a super-2 number, since 2×71288469² = 10164091624727922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71288419) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4224 + ... + 12665.

It is an arithmetic number, because the mean of its divisors is an integer number (4976920).

Almost surely, 2^71288469 is an apocalyptic number.

It is an amenable number.

71288469 is a deficient number, since it is larger than the sum of its proper divisors (48157611).

71288469 is a wasteful number, since it uses less digits than its factorization.

71288469 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16969 (or 16966 counting only the distinct ones).

The product of its digits is 193536, while the sum is 45.

The square root of 71288469 is about 8443.2499074705. The cubic root of 71288469 is about 414.6418141308.

The spelling of 71288469 in words is "seventy-one million, two hundred eighty-eight thousand, four hundred sixty-nine".