71612190 has 96 divisors (see below), whose sum is σ = 202902336. Its totient is φ = 17418240.

The previous prime is 71612171. The next prime is 71612249. The reversal of 71612190 is 9121617.

It is a super-2 number, since 2×71612190² = 10256611513192200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 113175 + ... + 113805.

It is an arithmetic number, because the mean of its divisors is an integer number (2113566).

Almost surely, 2^71612190 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 71612190, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (101451168).

71612190 is an abundant number, since it is smaller than the sum of its proper divisors (131290146).

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

71612190 is a wasteful number, since it uses less digits than its factorization.

71612190 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 754 (or 751 counting only the distinct ones).

The product of its (nonzero) digits is 756, while the sum is 27.

The square root of 71612190 is about 8462.3985961428. The cubic root of 71612190 is about 415.2684961115.

The spelling of 71612190 in words is "seventy-one million, six hundred twelve thousand, one hundred ninety".