214215688 has 8 divisors (see below), whose sum is σ = 401654430. Its totient is φ = 107107840.

The previous prime is 214215679. The next prime is 214215719. The reversal of 214215688 is 886512412.

214215688 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 146942884 + 67272804 = 12122^2 + 8202^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13388473 + ... + 13388488.

Almost surely, 2^214215688 is an apocalyptic number.

It is an amenable number.

214215688 is a deficient number, since it is larger than the sum of its proper divisors (187438742).

214215688 is a wasteful number, since it uses less digits than its factorization.

214215688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26776967 (or 26776963 counting only the distinct ones).

The product of its digits is 30720, while the sum is 37.

The square root of 214215688 is about 14636.1090457813. The cubic root of 214215688 is about 598.3432889839.

The spelling of 214215688 in words is "two hundred fourteen million, two hundred fifteen thousand, six hundred eighty-eight".