71748424 has 64 divisors (see below), whose sum is σ = 152951040. Its totient is φ = 31268160.

The previous prime is 71748421. The next prime is 71748433. The reversal of 71748424 is 42484717.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (71748421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 253387 + ... + 253669.

It is an arithmetic number, because the mean of its divisors is an integer number (2389860).

Almost surely, 2^71748424 is an apocalyptic number.

71748424 is the 4528-th nonagonal number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 71748424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76475520).

71748424 is an abundant number, since it is smaller than the sum of its proper divisors (81202616).

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

71748424 is a wasteful number, since it uses less digits than its factorization.

71748424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 410 (or 406 counting only the distinct ones).

The product of its digits is 50176, while the sum is 37.

The square root of 71748424 is about 8470.4441441993. Note that the first 3 decimals coincide. The cubic root of 71748424 is about 415.5316629046.

It can be divided in two parts, 717 and 48424, that added together give a triangular number (49141 = T₃₁₃).

The spelling of 71748424 in words is "seventy-one million, seven hundred forty-eight thousand, four hundred twenty-four".