71623242 has 48 divisors (see below), whose sum is σ = 163470528. Its totient is φ = 22619520.

The previous prime is 71623199. The next prime is 71623249. The reversal of 71623242 is 24232617.

It is not an unprimeable number, because it can be changed into a prime (71623249) 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, 46017 + ... + 47547.

It is an arithmetic number, because the mean of its divisors is an integer number (3405636).

Almost surely, 2^71623242 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 71623242, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81735264).

71623242 is an abundant number, since it is smaller than the sum of its proper divisors (91847286).

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

71623242 is a wasteful number, since it uses less digits than its factorization.

71623242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1675 (or 1672 counting only the distinct ones).

The product of its digits is 4032, while the sum is 27.

The square root of 71623242 is about 8463.0515772976. The cubic root of 71623242 is about 415.2898579836.

Adding to 71623242 its reverse (24232617), we get a palindrome (95855859).

It can be divided in two parts, 7162 and 3242, that added together give a square (10404 = 102²).

The spelling of 71623242 in words is "seventy-one million, six hundred twenty-three thousand, two hundred forty-two".