71619072 has 80 divisors (see below), whose sum is σ = 218087232. Its totient is φ = 20459520.

The previous prime is 71619071. The next prime is 71619073. The reversal of 71619072 is 27091617.

It is an interprime number because it is at equal distance from previous prime (71619071) and next prime (71619073).

It is not an unprimeable number, because it can be changed into a prime (71619071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7422 + ... + 14082.

Almost surely, 2^71619072 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 71619072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (109043616).

71619072 is an abundant number, since it is smaller than the sum of its proper divisors (146468160).

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

71619072 is an equidigital number, since it uses as much as digits as its factorization.

71619072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6689 (or 6673 counting only the distinct ones).

The product of its (nonzero) digits is 5292, while the sum is 33.

The square root of 71619072 is about 8462.8052086764. The cubic root of 71619072 is about 415.2817982520.

The spelling of 71619072 in words is "seventy-one million, six hundred nineteen thousand, seventy-two".