71054784 has 84 divisors (see below), whose sum is σ = 204856080. Its totient is φ = 23546880.

The previous prime is 71054783. The next prime is 71054827. The reversal of 71054784 is 48745017.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71054783) 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 11 ways as a sum of consecutive naturals, for example, 161637 + ... + 162075.

Almost surely, 2^71054784 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 71054784, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (102428040).

71054784 is an abundant number, since it is smaller than the sum of its proper divisors (133801296).

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

71054784 is a wasteful number, since it uses less digits than its factorization.

71054784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 738 (or 725 counting only the distinct ones).

The product of its (nonzero) digits is 31360, while the sum is 36.

The square root of 71054784 is about 8429.3999786462. The cubic root of 71054784 is about 414.1882501715.

The spelling of 71054784 in words is "seventy-one million, fifty-four thousand, seven hundred eighty-four".