34340220 has 96 divisors (see below), whose sum is σ = 112492800. Its totient is φ = 8672832.

The previous prime is 34340197. The next prime is 34340227. The reversal of 34340220 is 2204343.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 34340193 and 34340202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (34340227) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8587 + ... + 11933.

It is an arithmetic number, because the mean of its divisors is an integer number (1171800).

Almost surely, 2^34340220 is an apocalyptic number.

34340220 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 34340220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (56246400).

34340220 is an abundant number, since it is smaller than the sum of its proper divisors (78152580).

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

34340220 is a wasteful number, since it uses less digits than its factorization.

34340220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3384 (or 3376 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 18.

The square root of 34340220 is about 5860.0529007851. The cubic root of 34340220 is about 325.0381651433.

Adding to 34340220 its reverse (2204343), we get a palindrome (36544563).

The spelling of 34340220 in words is "thirty-four million, three hundred forty thousand, two hundred twenty".