216269976 has 96 divisors (see below), whose sum is σ = 594501120. Its totient is φ = 65520000.

The previous prime is 216269969. The next prime is 216270001. The reversal of 216269976 is 679962612.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 287601 + ... + 288351.

It is an arithmetic number, because the mean of its divisors is an integer number (6192720).

Almost surely, 2^216269976 is an apocalyptic number.

216269976 is a gapful number since it is divisible by the number (26) 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 216269976, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (297250560).

216269976 is an abundant number, since it is smaller than the sum of its proper divisors (378231144).

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

216269976 is a wasteful number, since it uses less digits than its factorization.

216269976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 857 (or 840 counting only the distinct ones).

The product of its digits is 489888, while the sum is 48.

The square root of 216269976 is about 14706.1203585446. The cubic root of 216269976 is about 600.2498737019.

The spelling of 216269976 in words is "two hundred sixteen million, two hundred sixty-nine thousand, nine hundred seventy-six".