34238221 has 4 divisors (see below), whose sum is σ = 36252252. Its totient is φ = 32224192.

The previous prime is 34238213. The next prime is 34238227. The reversal of 34238221 is 12283243.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12283243 = 7 ⋅1754749.

It can be written as a sum of positive squares in 2 ways, for example, as 11485321 + 22752900 = 3389^2 + 4770^2 .

It is a cyclic number.

It is not a de Polignac number, because 34238221 - 2³ = 34238213 is a prime.

It is a super-4 number, since 4×34238221⁴ (a number of 31 digits) contains 4444 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (34238227) 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, 1006990 + ... + 1007023.

It is an arithmetic number, because the mean of its divisors is an integer number (9063063).

Almost surely, 2^34238221 is an apocalyptic number.

It is an amenable number.

34238221 is a deficient number, since it is larger than the sum of its proper divisors (2014031).

34238221 is a wasteful number, since it uses less digits than its factorization.

34238221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2014030.

The product of its digits is 2304, while the sum is 25.

The square root of 34238221 is about 5851.3435209360. The cubic root of 34238221 is about 324.7160312445.

The spelling of 34238221 in words is "thirty-four million, two hundred thirty-eight thousand, two hundred twenty-one".