214404918 has 64 divisors (see below), whose sum is σ = 558835200. Its totient is φ = 53217792.

The previous prime is 214404913. The next prime is 214404937. The reversal of 214404918 is 819404412.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (214404913) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2268 + ... + 20831.

It is an arithmetic number, because the mean of its divisors is an integer number (8731800).

Almost surely, 2^214404918 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 214404918, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (279417600).

214404918 is an abundant number, since it is smaller than the sum of its proper divisors (344430282).

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

214404918 is a wasteful number, since it uses less digits than its factorization.

214404918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23141.

The product of its (nonzero) digits is 9216, while the sum is 33.

The square root of 214404918 is about 14642.5721101178. The cubic root of 214404918 is about 598.5194217073.

The spelling of 214404918 in words is "two hundred fourteen million, four hundred four thousand, nine hundred eighteen".