214288440 has 64 divisors (see below), whose sum is σ = 643831200. Its totient is φ = 57057792.

The previous prime is 214288421. The next prime is 214288471. The reversal of 214288440 is 44882412.

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, 146754 + ... + 148206.

Almost surely, 2^214288440 is an apocalyptic number.

214288440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

214288440 is an abundant number, since it is smaller than the sum of its proper divisors (429542760).

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

214288440 is a wasteful number, since it uses less digits than its factorization.

214288440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2696 (or 2692 counting only the distinct ones).

The product of its (nonzero) digits is 16384, while the sum is 33.

The square root of 214288440 is about 14638.5941947989. The cubic root of 214288440 is about 598.4110178298.

The spelling of 214288440 in words is "two hundred fourteen million, two hundred eighty-eight thousand, four hundred forty".