214128686 has 8 divisors (see below), whose sum is σ = 324373464. Its totient is φ = 106004200.

The previous prime is 214128683. The next prime is 214128709. The reversal of 214128686 is 686821412.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (214128683) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 529820 + ... + 530223.

It is an arithmetic number, because the mean of its divisors is an integer number (40546683).

Almost surely, 2^214128686 is an apocalyptic number.

214128686 is a deficient number, since it is larger than the sum of its proper divisors (110244778).

214128686 is a wasteful number, since it uses less digits than its factorization.

214128686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1060146.

The product of its digits is 36864, while the sum is 38.

The square root of 214128686 is about 14633.1365742277. The cubic root of 214128686 is about 598.2622738905.

The spelling of 214128686 in words is "two hundred fourteen million, one hundred twenty-eight thousand, six hundred eighty-six".