34772221 has 8 divisors (see below), whose sum is σ = 38098944. Its totient is φ = 31473120.

The previous prime is 34772209. The next prime is 34772233. The reversal of 34772221 is 12227743.

34772221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (34772209) and next prime (34772233).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 34772221 - 2⁷ = 34772093 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 34772221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (34772921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4221 + ... + 9346.

It is an arithmetic number, because the mean of its divisors is an integer number (4762368).

Almost surely, 2^34772221 is an apocalyptic number.

It is an amenable number.

34772221 is a deficient number, since it is larger than the sum of its proper divisors (3326723).

34772221 is a wasteful number, since it uses less digits than its factorization.

34772221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13811.

The product of its digits is 4704, while the sum is 28.

The square root of 34772221 is about 5896.7975206887. The cubic root of 34772221 is about 326.3954858735.

Adding to 34772221 its reverse (12227743), we get a palindrome (46999964).

It can be divided in two parts, 347722 and 21, that added together give a palindrome (347743).

The spelling of 34772221 in words is "thirty-four million, seven hundred seventy-two thousand, two hundred twenty-one".