71124430 has 32 divisors (see below), whose sum is σ = 145986624. Its totient is φ = 24715776.

The previous prime is 71124419. The next prime is 71124433. The reversal of 71124430 is 3442117.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71124433) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13882 + ... + 18301.

It is an arithmetic number, because the mean of its divisors is an integer number (4562082).

Almost surely, 2^71124430 is an apocalyptic number.

71124430 is an abundant number, since it is smaller than the sum of its proper divisors (74862194).

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

71124430 is a wasteful number, since it uses less digits than its factorization.

71124430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32220.

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 71124430 is about 8433.5301031063. The cubic root of 71124430 is about 414.3235313986.

Adding to 71124430 its reverse (3442117), we get a palindrome (74566547).

The spelling of 71124430 in words is "seventy-one million, one hundred twenty-four thousand, four hundred thirty".