71388054 has 64 divisors (see below), whose sum is σ = 169248000. Its totient is φ = 22517352.

The previous prime is 71388047. The next prime is 71388077. The reversal of 71388054 is 45088317.

It is a congruent number.

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 31 ways as a sum of consecutive naturals, for example, 82677 + ... + 83535.

It is an arithmetic number, because the mean of its divisors is an integer number (2644500).

Almost surely, 2^71388054 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 71388054, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84624000).

71388054 is an abundant number, since it is smaller than the sum of its proper divisors (97859946).

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

71388054 is an equidigital number, since it uses as much as digits as its factorization.

71388054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 901 (or 883 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 36.

The square root of 71388054 is about 8449.1451638613. The cubic root of 71388054 is about 414.8347994909.

The spelling of 71388054 in words is "seventy-one million, three hundred eighty-eight thousand, fifty-four".