71224104 has 64 divisors (see below), whose sum is σ = 204243840. Its totient is φ = 20275200.

The previous prime is 71224099. The next prime is 71224159. The reversal of 71224104 is 40142217.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58704 + ... + 59904.

It is an arithmetic number, because the mean of its divisors is an integer number (3191310).

Almost surely, 2^71224104 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 71224104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (102121920).

71224104 is an abundant number, since it is smaller than the sum of its proper divisors (133019736).

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

71224104 is a wasteful number, since it uses less digits than its factorization.

71224104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1570 (or 1566 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 21.

The square root of 71224104 is about 8439.4374220086. The cubic root of 71224104 is about 414.5169858244.

The spelling of 71224104 in words is "seventy-one million, two hundred twenty-four thousand, one hundred four".