214544440 has 32 divisors (see below), whose sum is σ = 526610160. Its totient is φ = 78016000.

The previous prime is 214544419. The next prime is 214544443. The reversal of 214544440 is 44445412.

It is a junction number, because it is equal to n+sod(n) for n = 214544399 and 214544408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (214544443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 243361 + ... + 244240.

Almost surely, 2^214544440 is an apocalyptic number.

214544440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

214544440 is an abundant number, since it is smaller than the sum of its proper divisors (312065720).

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

214544440 is a wasteful number, since it uses less digits than its factorization.

214544440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 487623 (or 487619 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 28.

The square root of 214544440 is about 14647.3355938887. The cubic root of 214544440 is about 598.6492205327.

Adding to 214544440 its reverse (44445412), we get a palindrome (258989852).

The spelling of 214544440 in words is "two hundred fourteen million, five hundred forty-four thousand, four hundred forty".