71229873 has 32 divisors (see below), whose sum is σ = 116444160. Its totient is φ = 38111040.

The previous prime is 71229869. The next prime is 71229877. The reversal of 71229873 is 37892217.

It is an interprime number because it is at equal distance from previous prime (71229869) and next prime (71229877).

It is not a de Polignac number, because 71229873 - 2² = 71229869 is a prime.

It is a super-2 number, since 2×71229873² = 10147389615192258, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (71229877) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6258 + ... + 13476.

It is an arithmetic number, because the mean of its divisors is an integer number (3638880).

Almost surely, 2^71229873 is an apocalyptic number.

It is an amenable number.

71229873 is a deficient number, since it is larger than the sum of its proper divisors (45214287).

71229873 is a wasteful number, since it uses less digits than its factorization.

71229873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7269.

The product of its digits is 42336, while the sum is 39.

The square root of 71229873 is about 8439.7792032730. The cubic root of 71229873 is about 414.5281771852.

The spelling of 71229873 in words is "seventy-one million, two hundred twenty-nine thousand, eight hundred seventy-three".