216414406 has 32 divisors (see below), whose sum is σ = 374689728. Its totient is φ = 92949120.

The previous prime is 216414347. The next prime is 216414409. The reversal of 216414406 is 604414612.

216414406 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216414409) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17236 + ... + 27016.

It is an arithmetic number, because the mean of its divisors is an integer number (11709054).

Almost surely, 2^216414406 is an apocalyptic number.

216414406 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

216414406 is a deficient number, since it is larger than the sum of its proper divisors (158275322).

216414406 is a wasteful number, since it uses less digits than its factorization.

216414406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9856.

The product of its (nonzero) digits is 4608, while the sum is 28.

The square root of 216414406 is about 14711.0300795016. The cubic root of 216414406 is about 600.3834641325.

The spelling of 216414406 in words is "two hundred sixteen million, four hundred fourteen thousand, four hundred six".