34211220 has 48 divisors (see below), whose sum is σ = 98134848. Its totient is φ = 8899840.

The previous prime is 34211201. The next prime is 34211227. The reversal of 34211220 is 2211243.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 34211220.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (34211227) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4494 + ... + 9413.

It is an arithmetic number, because the mean of its divisors is an integer number (2044476).

Almost surely, 2^34211220 is an apocalyptic number.

34211220 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

34211220 is an abundant number, since it is smaller than the sum of its proper divisors (63923628).

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

34211220 is a wasteful number, since it uses less digits than its factorization.

34211220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13960 (or 13958 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 34211220 is about 5849.0358179789. The cubic root of 34211220 is about 324.6306494392.

Adding to 34211220 its reverse (2211243), we get a palindrome (36422463).

The spelling of 34211220 in words is "thirty-four million, two hundred eleven thousand, two hundred twenty".