71011854 has 48 divisors (see below), whose sum is σ = 163846800. Its totient is φ = 22163328.

The previous prime is 71011849. The next prime is 71011861. The reversal of 71011854 is 45811017.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 29272 + ... + 31604.

It is an arithmetic number, because the mean of its divisors is an integer number (3413475).

Almost surely, 2^71011854 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 71011854, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81923400).

71011854 is an abundant number, since it is smaller than the sum of its proper divisors (92834946).

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

71011854 is a wasteful number, since it uses less digits than its factorization.

71011854 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2449 (or 2446 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 27.

The square root of 71011854 is about 8426.8531493079. The cubic root of 71011854 is about 414.1048183799.

The spelling of 71011854 in words is "seventy-one million, eleven thousand, eight hundred fifty-four".