8427213 has 16 divisors (see below), whose sum is σ = 12605760. Its totient is φ = 5563728.

The previous prime is 8427191. The next prime is 8427217. The reversal of 8427213 is 3127248.

It is not a de Polignac number, because 8427213 - 2⁹ = 8426701 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a d-powerful number, because it can be written as 8 + 4⁷ + 2⁷ + 7⁴ + 2²³ + 1 + 3⁹ .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8427217) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1431 + ... + 4347.

It is an arithmetic number, because the mean of its divisors is an integer number (787860).

Almost surely, 2^8427213 is an apocalyptic number.

It is an amenable number.

8427213 is a deficient number, since it is larger than the sum of its proper divisors (4178547).

8427213 is a wasteful number, since it uses less digits than its factorization.

8427213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3033 (or 3027 counting only the distinct ones).

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

The square root of 8427213 is about 2902.9662416225. The cubic root of 8427213 is about 203.4985521492.

It can be divided in two parts, 842721 and 3, that added together give a square (842724 = 918²).

The spelling of 8427213 in words is "eight million, four hundred twenty-seven thousand, two hundred thirteen".