71850128 has 20 divisors (see below), whose sum is σ = 159096960. Its totient is φ = 30792864.

The previous prime is 71850113. The next prime is 71850133. The reversal of 71850128 is 82105817.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 71850094 and 71850103.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 320648 + ... + 320871.

It is an arithmetic number, because the mean of its divisors is an integer number (7954848).

Almost surely, 2^71850128 is an apocalyptic number.

It is an amenable number.

71850128 is an abundant number, since it is smaller than the sum of its proper divisors (87246832).

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

71850128 is a wasteful number, since it uses less digits than its factorization.

71850128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 641534 (or 641528 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 32.

The square root of 71850128 is about 8476.4454814503. The cubic root of 71850128 is about 415.7279100928.

The spelling of 71850128 in words is "seventy-one million, eight hundred fifty thousand, one hundred twenty-eight".