214281428 has 12 divisors (see below), whose sum is σ = 375959220. Its totient is φ = 106864512.

The previous prime is 214281421. The next prime is 214281497. The reversal of 214281428 is 824182412.

214281428 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 40094224 + 174187204 = 6332^2 + 13198^2 .

It is a junction number, because it is equal to n+sod(n) for n = 214281394 and 214281403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (214281421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67301 + ... + 70412.

It is an arithmetic number, because the mean of its divisors is an integer number (31329935).

Almost surely, 2^214281428 is an apocalyptic number.

It is an amenable number.

214281428 is a deficient number, since it is larger than the sum of its proper divisors (161677792).

214281428 is a wasteful number, since it uses less digits than its factorization.

214281428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138106 (or 138104 counting only the distinct ones).

The product of its digits is 8192, while the sum is 32.

The square root of 214281428 is about 14638.3546889669. The cubic root of 214281428 is about 598.4044906402.

The spelling of 214281428 in words is "two hundred fourteen million, two hundred eighty-one thousand, four hundred twenty-eight".