34078221 has 12 divisors (see below), whose sum is σ = 50554972. Its totient is φ = 22104576.

The previous prime is 34078211. The next prime is 34078273. The reversal of 34078221 is 12287043.

It can be written as a sum of positive squares in 2 ways, for example, as 32148900 + 1929321 = 5670^2 + 1389^2 .

It is not a de Polignac number, because 34078221 - 2¹⁴ = 34061837 is a prime.

It is a super-2 number, since 2×34078221² = 2322650293049682, which contains 22 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 (34078211) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 50836 + ... + 51501.

Almost surely, 2^34078221 is an apocalyptic number.

It is an amenable number.

34078221 is a deficient number, since it is larger than the sum of its proper divisors (16476751).

34078221 is a wasteful number, since it uses less digits than its factorization.

34078221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102380 (or 102377 counting only the distinct ones).

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

The square root of 34078221 is about 5837.6554369027. The cubic root of 34078221 is about 324.2094267874.

It can be divided in two parts, 3407 and 8221, that added together give a triangular number (11628 = T₁₅₂).

The spelling of 34078221 in words is "thirty-four million, seventy-eight thousand, two hundred twenty-one".