71478 has 36 divisors (see below), whose sum is σ = 178308. Its totient is φ = 20520.

The previous prime is 71473. The next prime is 71479. The reversal of 71478 is 87417.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 71478.

It is not an unprimeable number, because it can be changed into a prime (71471) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 3753 + ... + 3771.

It is an arithmetic number, because the mean of its divisors is an integer number (4953).

2⁷¹⁴⁷⁸ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 71478, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89154).

71478 is an abundant number, since it is smaller than the sum of its proper divisors (106830).

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

71478 is a wasteful number, since it uses less digits than its factorization.

71478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57 (or 35 counting only the distinct ones).

The product of its digits is 1568, while the sum is 27.

The square root of 71478 is about 267.3536983099. The cubic root of 71478 is about 41.5008951275.

It can be divided in two parts, 7 and 1478, that added together give a triangular number (1485 = T₅₄).

The spelling of 71478 in words is "seventy-one thousand, four hundred seventy-eight".