71136090 has 64 divisors (see below), whose sum is σ = 190437120. Its totient is φ = 18895680.

The previous prime is 71136073. The next prime is 71136113. The reversal of 71136090 is 9063117.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 131220 + ... + 131760.

It is an arithmetic number, because the mean of its divisors is an integer number (2975580).

Almost surely, 2^71136090 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 71136090, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (95218560).

71136090 is an abundant number, since it is smaller than the sum of its proper divisors (119301030).

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

71136090 is a wasteful number, since it uses less digits than its factorization.

71136090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1044 (or 1038 counting only the distinct ones).

The product of its (nonzero) digits is 1134, while the sum is 27.

The square root of 71136090 is about 8434.2213629949. The cubic root of 71136090 is about 414.3461712914.

It can be divided in two parts, 7113 and 6090, that added together give a triangular number (13203 = T₁₆₂).

The spelling of 71136090 in words is "seventy-one million, one hundred thirty-six thousand, ninety".