214631478 has 16 divisors (see below), whose sum is σ = 476958960. Its totient is φ = 71543808.

The previous prime is 214631399. The next prime is 214631491. The reversal of 214631478 is 874136412.

214631478 is a `hidden beast` number, since 2 + 14 + 631 + 4 + 7 + 8 = 666.

214631478 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1987275 + ... + 1987382.

It is an arithmetic number, because the mean of its divisors is an integer number (29809935).

Almost surely, 2^214631478 is an apocalyptic number.

214631478 is an abundant number, since it is smaller than the sum of its proper divisors (262327482).

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

214631478 is a wasteful number, since it uses less digits than its factorization.

214631478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3974668 (or 3974662 counting only the distinct ones).

The product of its digits is 32256, while the sum is 36.

The square root of 214631478 is about 14650.3064131778. The cubic root of 214631478 is about 598.7301644253.

The spelling of 214631478 in words is "two hundred fourteen million, six hundred thirty-one thousand, four hundred seventy-eight".