71028550 has 24 divisors (see below), whose sum is σ = 139886136. Its totient is φ = 26739840.

The previous prime is 71028539. The next prime is 71028557. The reversal of 71028550 is 5582017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71028557) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 40932 + ... + 42631.

It is an arithmetic number, because the mean of its divisors is an integer number (5828589).

Almost surely, 2^71028550 is an apocalyptic number.

71028550 is a deficient number, since it is larger than the sum of its proper divisors (68857586).

71028550 is a wasteful number, since it uses less digits than its factorization.

71028550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83592 (or 83587 counting only the distinct ones).

The product of its (nonzero) digits is 2800, while the sum is 28.

The square root of 71028550 is about 8427.8437337198. The cubic root of 71028550 is about 414.1372700147.

The spelling of 71028550 in words is "seventy-one million, twenty-eight thousand, five hundred fifty".