216464316 has 48 divisors (see below), whose sum is σ = 529557504. Its totient is φ = 68688576.

The previous prime is 216464291. The next prime is 216464329. The reversal of 216464316 is 613464612.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 59790 + ... + 63306.

It is an arithmetic number, because the mean of its divisors is an integer number (11032448).

Almost surely, 2^216464316 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 216464316, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (264778752).

216464316 is an abundant number, since it is smaller than the sum of its proper divisors (313093188).

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

216464316 is a wasteful number, since it uses less digits than its factorization.

216464316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3770 (or 3768 counting only the distinct ones).

The product of its digits is 20736, while the sum is 33.

The square root of 216464316 is about 14712.7263279108. The cubic root of 216464316 is about 600.4296145344.

The spelling of 216464316 in words is "two hundred sixteen million, four hundred sixty-four thousand, three hundred sixteen".