216545010 has 128 divisors (see below), whose sum is σ = 586932480. Its totient is φ = 50688000.

The previous prime is 216544987. The next prime is 216545029. The reversal of 216545010 is 10545612.

216545010 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an alternating number because its digits alternate between even and odd.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2143960 + ... + 2144060.

It is an arithmetic number, because the mean of its divisors is an integer number (4585410).

Almost surely, 2^216545010 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 216545010, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (293466240).

216545010 is an abundant number, since it is smaller than the sum of its proper divisors (370387470).

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

216545010 is a wasteful number, since it uses less digits than its factorization.

216545010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284.

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 216545010 is about 14715.4683921376. The cubic root of 216545010 is about 600.5042150488.

The spelling of 216545010 in words is "two hundred sixteen million, five hundred forty-five thousand, ten".