216250884 has 30 divisors (see below), whose sum is σ = 565323374. Its totient is φ = 72083520.

The previous prime is 216250873. The next prime is 216250907. The reversal of 216250884 is 488052612.

216250884 is a `hidden beast` number, since 21 + 625 + 0 + 8 + 8 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 209438784 + 6812100 = 14472^2 + 2610^2 .

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

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 9 ways as a sum of consecutive naturals, for example, 333397 + ... + 334044.

Almost surely, 2^216250884 is an apocalyptic number.

It is an amenable number.

216250884 is an abundant number, since it is smaller than the sum of its proper divisors (349072490).

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

216250884 is a wasteful number, since it uses less digits than its factorization.

216250884 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 667457 (or 667446 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 36.

The square root of 216250884 is about 14705.4712267237. The cubic root of 216250884 is about 600.2322101192.

The spelling of 216250884 in words is "two hundred sixteen million, two hundred fifty thousand, eight hundred eighty-four".