34222728 has 32 divisors (see below), whose sum is σ = 86320800. Its totient is φ = 11305728.

The previous prime is 34222691. The next prime is 34222733. The reversal of 34222728 is 82722243.

34222728 is nontrivially palindromic in base 15.

It is a super-2 number, since 2×34222728² = 2342390223523968, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 34222695 and 34222704.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3598 + ... + 9021.

It is an arithmetic number, because the mean of its divisors is an integer number (2697525).

Almost surely, 2^34222728 is an apocalyptic number.

It is an amenable number.

34222728 is an abundant number, since it is smaller than the sum of its proper divisors (52098072).

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

34222728 is a wasteful number, since it uses less digits than its factorization.

34222728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12741 (or 12737 counting only the distinct ones).

The product of its digits is 10752, while the sum is 30.

The square root of 34222728 is about 5850.0194871470. The cubic root of 34222728 is about 324.6670452055.

The spelling of 34222728 in words is "thirty-four million, two hundred twenty-two thousand, seven hundred twenty-eight".