214307478 has 192 divisors, whose sum is σ = 623808000. Its totient is φ = 53887680.

The previous prime is 214307449. The next prime is 214307497. The reversal of 214307478 is 874703412.

It is a happy number.

It is an alternating number because its digits alternate between even and odd.

It is a Curzon number.

It is a nialpdrome in base 11.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1076823 + ... + 1077021.

It is an arithmetic number, because the mean of its divisors is an integer number (3249000).

Almost surely, 2^214307478 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 214307478, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (311904000).

214307478 is an abundant number, since it is smaller than the sum of its proper divisors (409500522).

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

214307478 is a wasteful number, since it uses less digits than its factorization.

214307478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272 (or 259 counting only the distinct ones).

The product of its (nonzero) digits is 37632, while the sum is 36.

The square root of 214307478 is about 14639.2444477166. The cubic root of 214307478 is about 598.4287388224.

The spelling of 214307478 in words is "two hundred fourteen million, three hundred seven thousand, four hundred seventy-eight".