216013456 has 40 divisors (see below), whose sum is σ = 433900800. Its totient is φ = 104069760.

The previous prime is 216013439. The next prime is 216013459. The reversal of 216013456 is 654310612.

It is not an unprimeable number, because it can be changed into a prime (216013459) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 132615 + ... + 134233.

It is an arithmetic number, because the mean of its divisors is an integer number (10847520).

Almost surely, 2^216013456 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 216013456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (216950400).

216013456 is an abundant number, since it is smaller than the sum of its proper divisors (217887344).

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

216013456 is a wasteful number, since it uses less digits than its factorization.

216013456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1927 (or 1921 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 216013456 is about 14697.3962319861. The cubic root of 216013456 is about 600.0124590005.

The spelling of 216013456 in words is "two hundred sixteen million, thirteen thousand, four hundred fifty-six".