216450252 has 48 divisors (see below), whose sum is σ = 565488000. Its totient is φ = 71594640.

The previous prime is 216450233. The next prime is 216450301. The reversal of 216450252 is 252054612.

216450252 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (27).

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, 6499 + ... + 21797.

It is an arithmetic number, because the mean of its divisors is an integer number (11781000).

Almost surely, 2^216450252 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 216450252, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (282744000).

216450252 is an abundant number, since it is smaller than the sum of its proper divisors (349037748).

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

216450252 is a wasteful number, since it uses less digits than its factorization.

216450252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15443 (or 15435 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 216450252 is about 14712.2483665822. The cubic root of 216450252 is about 600.4166106590.

The spelling of 216450252 in words is "two hundred sixteen million, four hundred fifty thousand, two hundred fifty-two".