34972221 has 16 divisors (see below), whose sum is σ = 48097728. Its totient is φ = 22588800.

The previous prime is 34972219. The next prime is 34972253. The reversal of 34972221 is 12227943.

It is not a de Polignac number, because 34972221 - 2¹ = 34972219 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (34972211) 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, 18406 + ... + 20216.

It is an arithmetic number, because the mean of its divisors is an integer number (3006108).

Almost surely, 2^34972221 is an apocalyptic number.

It is an amenable number.

34972221 is a deficient number, since it is larger than the sum of its proper divisors (13125507).

34972221 is a wasteful number, since it uses less digits than its factorization.

34972221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2012.

The product of its digits is 6048, while the sum is 30.

The square root of 34972221 is about 5913.7315630657. The cubic root of 34972221 is about 327.0200681602.

The spelling of 34972221 in words is "thirty-four million, nine hundred seventy-two thousand, two hundred twenty-one".