71928216 has 64 divisors (see below), whose sum is σ = 201919200. Its totient is φ = 23721984.

The previous prime is 71928193. The next prime is 71928223. The reversal of 71928216 is 61282917.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19236 + ... + 22668.

Almost surely, 2^71928216 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 71928216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (100959600).

71928216 is an abundant number, since it is smaller than the sum of its proper divisors (129990984).

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

71928216 is a wasteful number, since it uses less digits than its factorization.

71928216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3545 (or 3535 counting only the distinct ones).

The product of its digits is 12096, while the sum is 36.

The square root of 71928216 is about 8481.0504066419. The cubic root of 71928216 is about 415.8784623997.

The spelling of 71928216 in words is "seventy-one million, nine hundred twenty-eight thousand, two hundred sixteen".