34021220 has 12 divisors (see below), whose sum is σ = 71444604. Its totient is φ = 13608480.

The previous prime is 34021219. The next prime is 34021231. The reversal of 34021220 is 2212043.

It can be written as a sum of positive squares in 2 ways, for example, as 9834496 + 24186724 = 3136^2 + 4918^2 .

It is a junction number, because it is equal to n+sod(n) for n = 34021195 and 34021204.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 850511 + ... + 850550.

It is an arithmetic number, because the mean of its divisors is an integer number (5953717).

Almost surely, 2^34021220 is an apocalyptic number.

It is an amenable number.

34021220 is an abundant number, since it is smaller than the sum of its proper divisors (37423384).

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

34021220 is a wasteful number, since it uses less digits than its factorization.

34021220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1701070 (or 1701068 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 34021220 is about 5832.7712110111. The cubic root of 34021220 is about 324.0285627413.

Adding to 34021220 its reverse (2212043), we get a palindrome (36233263).

The spelling of 34021220 in words is "thirty-four million, twenty-one thousand, two hundred twenty".