216462708 has 216 divisors, whose sum is σ = 712624640. Its totient is φ = 54172800.

The previous prime is 216462643. The next prime is 216462721. The reversal of 216462708 is 807264612.

216462708 is a `hidden beast` number, since 2 + 1 + 646 + 2 + 7 + 0 + 8 = 666.

It is a super-2 number, since 2×216462708² = 93712207909386528, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 945138 + ... + 945366.

Almost surely, 2^216462708 is an apocalyptic number.

216462708 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 216462708, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (356312320).

216462708 is an abundant number, since it is smaller than the sum of its proper divisors (496161932).

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

216462708 is a wasteful number, since it uses less digits than its factorization.

216462708 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 299 (or 283 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 216462708 is about 14712.6716812413. The cubic root of 216462708 is about 600.4281277717.

The spelling of 216462708 in words is "two hundred sixteen million, four hundred sixty-two thousand, seven hundred eight".