216425678 has 32 divisors (see below), whose sum is σ = 378950400. Its totient is φ = 90788544.

The previous prime is 216425669. The next prime is 216425681. The reversal of 216425678 is 876524612.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 167258 + ... + 168546.

It is an arithmetic number, because the mean of its divisors is an integer number (11842200).

Almost surely, 2^216425678 is an apocalyptic number.

216425678 is a deficient number, since it is larger than the sum of its proper divisors (162524722).

216425678 is a wasteful number, since it uses less digits than its factorization.

216425678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1544.

The product of its digits is 161280, while the sum is 41.

The square root of 216425678 is about 14711.4131884058. The cubic root of 216425678 is about 600.3938876606.

The spelling of 216425678 in words is "two hundred sixteen million, four hundred twenty-five thousand, six hundred seventy-eight".