71257088 has 44 divisors (see below), whose sum is σ = 162810192. Its totient is φ = 30535680.

The previous prime is 71257037. The next prime is 71257093. The reversal of 71257088 is 88075217.

It is a congruent number.

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, 2198 + ... + 12138.

Almost surely, 2^71257088 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 71257088, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81405096).

71257088 is an abundant number, since it is smaller than the sum of its proper divisors (91553104).

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

71257088 is an equidigital number, since it uses as much as digits as its factorization.

71257088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9968 (or 9950 counting only the distinct ones).

The product of its (nonzero) digits is 31360, while the sum is 38.

The square root of 71257088 is about 8441.3913545102. The cubic root of 71257088 is about 414.5809637825.

The spelling of 71257088 in words is "seventy-one million, two hundred fifty-seven thousand, eighty-eight".