71217234 has 48 divisors (see below), whose sum is σ = 169120224. Its totient is φ = 21480000.

The previous prime is 71217229. The next prime is 71217247. The reversal of 71217234 is 43271217.

It is a happy number.

It is a super-2 number, since 2×71217234² = 10143788837221512, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 71217198 and 71217207.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 48982 + ... + 50414.

It is an arithmetic number, because the mean of its divisors is an integer number (3523338).

Almost surely, 2^71217234 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 71217234, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84560112).

71217234 is an abundant number, since it is smaller than the sum of its proper divisors (97902990).

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

71217234 is a wasteful number, since it uses less digits than its factorization.

71217234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1703 (or 1700 counting only the distinct ones).

The product of its digits is 2352, while the sum is 27.

The square root of 71217234 is about 8439.0303945418. The cubic root of 71217234 is about 414.5036578306.

The spelling of 71217234 in words is "seventy-one million, two hundred seventeen thousand, two hundred thirty-four".