71478500 has 48 divisors (see below), whose sum is σ = 158820480. Its totient is φ = 28095200.

The previous prime is 71478497. The next prime is 71478527. The reversal of 71478500 is 587417.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

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 15 ways as a sum of consecutive naturals, for example, 28289 + ... + 30711.

It is an arithmetic number, because the mean of its divisors is an integer number (3308760).

Almost surely, 2^71478500 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 71478500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79410240).

71478500 is an abundant number, since it is smaller than the sum of its proper divisors (87341980).

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

71478500 is a wasteful number, since it uses less digits than its factorization.

71478500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2501 (or 2489 counting only the distinct ones).

The product of its (nonzero) digits is 7840, while the sum is 32.

The square root of 71478500 is about 8454.4958454068. The cubic root of 71478500 is about 415.0099189578.

The spelling of 71478500 in words is "seventy-one million, four hundred seventy-eight thousand, five hundred".