216572448 has 96 divisors (see below), whose sum is σ = 596961792. Its totient is φ = 68659200.

The previous prime is 216572429. The next prime is 216572449. The reversal of 216572448 is 844275612.

It is a tau number, because it is divible by the number of its divisors (96).

It is not an unprimeable number, because it can be changed into a prime (216572449) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 180940 + ... + 182132.

It is an arithmetic number, because the mean of its divisors is an integer number (6218352).

Almost surely, 2^216572448 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 216572448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (298480896).

216572448 is an abundant number, since it is smaller than the sum of its proper divisors (380389344).

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

216572448 is a wasteful number, since it uses less digits than its factorization.

216572448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1298 (or 1290 counting only the distinct ones).

The product of its digits is 107520, while the sum is 39.

The square root of 216572448 is about 14716.4006468973. The cubic root of 216572448 is about 600.5295768875.

The spelling of 216572448 in words is "two hundred sixteen million, five hundred seventy-two thousand, four hundred forty-eight".