216954888 has 32 divisors (see below), whose sum is σ = 543154560. Its totient is φ = 72216000.

The previous prime is 216954869. The next prime is 216954893. The reversal of 216954888 is 888459612.

It is a self number, because there is not a number n which added to its sum of digits gives 216954888.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12006 + ... + 24042.

It is an arithmetic number, because the mean of its divisors is an integer number (16973580).

Almost surely, 2^216954888 is an apocalyptic number.

It is an amenable number.

216954888 is an abundant number, since it is smaller than the sum of its proper divisors (326199672).

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

216954888 is a wasteful number, since it uses less digits than its factorization.

216954888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12797 (or 12793 counting only the distinct ones).

The product of its digits is 1105920, while the sum is 51.

The square root of 216954888 is about 14729.3885820152. The cubic root of 216954888 is about 600.8828558609.

The spelling of 216954888 in words is "two hundred sixteen million, nine hundred fifty-four thousand, eight hundred eighty-eight".