71257650 has 24 divisors (see below), whose sum is σ = 176719344. Its totient is φ = 19002000.

The previous prime is 71257633. The next prime is 71257679. The reversal of 71257650 is 5675217.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 237376 + ... + 237675.

It is an arithmetic number, because the mean of its divisors is an integer number (7363306).

Almost surely, 2^71257650 is an apocalyptic number.

71257650 is an abundant number, since it is smaller than the sum of its proper divisors (105461694).

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

71257650 is a wasteful number, since it uses less digits than its factorization.

71257650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 475066 (or 475061 counting only the distinct ones).

The product of its (nonzero) digits is 14700, while the sum is 33.

The square root of 71257650 is about 8441.4246427958. The cubic root of 71257650 is about 414.5820537040.

The spelling of 71257650 in words is "seventy-one million, two hundred fifty-seven thousand, six hundred fifty".