71749632 has 52 divisors (see below), whose sum is σ = 191341760. Its totient is φ = 23912448.

The previous prime is 71749621. The next prime is 71749637. The reversal of 71749632 is 23694717.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71749637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9369 + ... + 15207.

Almost surely, 2^71749632 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 71749632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (95670880).

71749632 is an abundant number, since it is smaller than the sum of its proper divisors (119592128).

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

71749632 is an equidigital number, since it uses as much as digits as its factorization.

71749632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5866 (or 5844 counting only the distinct ones).

The product of its digits is 63504, while the sum is 39.

The square root of 71749632 is about 8470.5154506677. The cubic root of 71749632 is about 415.5339949393.

The spelling of 71749632 in words is "seventy-one million, seven hundred forty-nine thousand, six hundred thirty-two".