34551220 has 24 divisors (see below), whose sum is σ = 79154208. Its totient is φ = 12564000.

The previous prime is 34551211. The next prime is 34551241. The reversal of 34551220 is 2215543.

34551220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 34551191 and 34551200.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78306 + ... + 78745.

It is an arithmetic number, because the mean of its divisors is an integer number (3298092).

Almost surely, 2^34551220 is an apocalyptic number.

It is an amenable number.

34551220 is an abundant number, since it is smaller than the sum of its proper divisors (44602988).

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

34551220 is a wasteful number, since it uses less digits than its factorization.

34551220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157071 (or 157069 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 34551220 is about 5878.0285810806. The cubic root of 34551220 is about 325.7025276428.

Adding to 34551220 its reverse (2215543), we get a palindrome (36766763).

The spelling of 34551220 in words is "thirty-four million, five hundred fifty-one thousand, two hundred twenty".