214394940 has 72 divisors (see below), whose sum is σ = 658607040. Its totient is φ = 56444544.

The previous prime is 214394881. The next prime is 214394963. The reversal of 214394940 is 49493412.

214394940 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 214394895 and 214394904.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6682 + ... + 21758.

It is an arithmetic number, because the mean of its divisors is an integer number (9147320).

Almost surely, 2^214394940 is an apocalyptic number.

214394940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 214394940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (329303520).

214394940 is an abundant number, since it is smaller than the sum of its proper divisors (444212100).

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

214394940 is a wasteful number, since it uses less digits than its factorization.

214394940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15171 (or 15166 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 214394940 is about 14642.2313873262. The cubic root of 214394940 is about 598.5101369087.

The spelling of 214394940 in words is "two hundred fourteen million, three hundred ninety-four thousand, nine hundred forty".