71616672 has 72 divisors (see below), whose sum is σ = 208432224. Its totient is φ = 23313024.

The previous prime is 71616667. The next prime is 71616679. The reversal of 71616672 is 27661617.

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (71616679) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9493 + ... + 15275.

It is an arithmetic number, because the mean of its divisors is an integer number (2894892).

Almost surely, 2^71616672 is an apocalyptic number.

71616672 is a gapful number since it is divisible by the number (72) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 71616672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (104216112).

71616672 is an abundant number, since it is smaller than the sum of its proper divisors (136815552).

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

71616672 is a wasteful number, since it uses less digits than its factorization.

71616672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5842 (or 5831 counting only the distinct ones).

The product of its digits is 21168, while the sum is 36.

The square root of 71616672 is about 8462.6634105345. The cubic root of 71616672 is about 415.2771594157.

The spelling of 71616672 in words is "seventy-one million, six hundred sixteen thousand, six hundred seventy-two".