4278213 has 12 divisors (see below), whose sum is σ = 6296940. Its totient is φ = 2798016.

The previous prime is 4278193. The next prime is 4278223. The reversal of 4278213 is 3128724.

It can be written as a sum of positive squares in 2 ways, for example, as 2683044 + 1595169 = 1638^2 + 1263^2 .

It is not a de Polignac number, because 4278213 - 2⁸ = 4277957 is a prime.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4278223) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4008 + ... + 4961.

It is an arithmetic number, because the mean of its divisors is an integer number (524745).

Almost surely, 2^4278213 is an apocalyptic number.

It is an amenable number.

4278213 is a deficient number, since it is larger than the sum of its proper divisors (2018727).

4278213 is a wasteful number, since it uses less digits than its factorization.

4278213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9028 (or 9025 counting only the distinct ones).

The product of its digits is 2688, while the sum is 27.

The square root of 4278213 is about 2068.3841519408. The cubic root of 4278213 is about 162.3382279607.

The spelling of 4278213 in words is "four million, two hundred seventy-eight thousand, two hundred thirteen".