34221756 has 12 divisors (see below), whose sum is σ = 79850792. Its totient is φ = 11407248.

The previous prime is 34221751. The next prime is 34221763. The reversal of 34221756 is 65712243.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×34221756² = 2342257167447072, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (34221751) 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, 1425895 + ... + 1425918.

Almost surely, 2^34221756 is an apocalyptic number.

It is an amenable number.

34221756 is an abundant number, since it is smaller than the sum of its proper divisors (45629036).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

34221756 is a wasteful number, since it uses less digits than its factorization.

34221756 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2851820 (or 2851818 counting only the distinct ones).

The product of its digits is 10080, while the sum is 30.

The square root of 34221756 is about 5849.9364099108. The cubic root of 34221756 is about 324.6639714260.

Adding to 34221756 its reverse (65712243), we get a palindrome (99933999).

The spelling of 34221756 in words is "thirty-four million, two hundred twenty-one thousand, seven hundred fifty-six".