71749392 has 80 divisors (see below), whose sum is σ = 217777728. Its totient is φ = 20067840.

The previous prime is 71749387. The next prime is 71749409. The reversal of 71749392 is 29394717.

It is an unprimeable number.

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, 1638 + ... + 12090.

Almost surely, 2^71749392 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 71749392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (108888864).

71749392 is an abundant number, since it is smaller than the sum of its proper divisors (146028336).

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

71749392 is a wasteful number, since it uses less digits than its factorization.

71749392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10488 (or 10482 counting only the distinct ones).

The product of its digits is 95256, while the sum is 42.

The square root of 71749392 is about 8470.5012838674. The cubic root of 71749392 is about 415.5335316232.

The spelling of 71749392 in words is "seventy-one million, seven hundred forty-nine thousand, three hundred ninety-two".