216500448 has 48 divisors (see below), whose sum is σ = 575527680. Its totient is φ = 71250816.

The previous prime is 216500447. The next prime is 216500461. The reversal of 216500448 is 844005612.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216500443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6690 + ... + 21857.

It is an arithmetic number, because the mean of its divisors is an integer number (11990160).

Almost surely, 2^216500448 is an apocalyptic number.

It is an amenable number.

216500448 is an abundant number, since it is smaller than the sum of its proper divisors (359027232).

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

216500448 is a wasteful number, since it uses less digits than its factorization.

216500448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28639 (or 28631 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 30.

The square root of 216500448 is about 14713.9541932140. The cubic root of 216500448 is about 600.4630203728.

The spelling of 216500448 in words is "two hundred sixteen million, five hundred thousand, four hundred forty-eight".