71443744 has 48 divisors (see below), whose sum is σ = 146397888. Its totient is φ = 34290432.

The previous prime is 71443739. The next prime is 71443751. The reversal of 71443744 is 44734417.

71443744 = T₂₆₇ + T₂₆₈ + ... + T₇₆₄.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 97909 + ... + 98635.

It is an arithmetic number, because the mean of its divisors is an integer number (3049956).

Almost surely, 2^71443744 is an apocalyptic number.

71443744 is a gapful number since it is divisible by the number (74) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 71443744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73198944).

71443744 is an abundant number, since it is smaller than the sum of its proper divisors (74954144).

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

71443744 is a wasteful number, since it uses less digits than its factorization.

71443744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 857 (or 849 counting only the distinct ones).

The product of its digits is 37632, while the sum is 34.

The square root of 71443744 is about 8452.4401210538. The cubic root of 71443744 is about 414.9426426754.

The spelling of 71443744 in words is "seventy-one million, four hundred forty-three thousand, seven hundred forty-four".