34405221 has 16 divisors (see below), whose sum is σ = 46738944. Its totient is φ = 22508544.

The previous prime is 34405207. The next prime is 34405253. The reversal of 34405221 is 12250443.

It is not a de Polignac number, because 34405221 - 2⁶ = 34405157 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (34405121) 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, 39436 + ... + 40298.

It is an arithmetic number, because the mean of its divisors is an integer number (2921184).

Almost surely, 2^34405221 is an apocalyptic number.

It is an amenable number.

34405221 is a deficient number, since it is larger than the sum of its proper divisors (12333723).

34405221 is a wasteful number, since it uses less digits than its factorization.

34405221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1100.

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 34405221 is about 5865.5963891151. The cubic root of 34405221 is about 325.2431190735.

Adding to 34405221 its reverse (12250443), we get a palindrome (46655664).

The spelling of 34405221 in words is "thirty-four million, four hundred five thousand, two hundred twenty-one".