3436721220 has 48 divisors (see below), whose sum is σ = 9653616000. Its totient is φ = 913526016.

The previous prime is 3436721201. The next prime is 3436721231. The reversal of 3436721220 is 221276343.

It is a super-2 number, since 2×3436721220² = 23622105487996576800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

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 15 ways as a sum of consecutive naturals, for example, 72720 + ... + 110279.

It is an arithmetic number, because the mean of its divisors is an integer number (201117000).

Almost surely, 2^3436721220 is an apocalyptic number.

3436721220 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3436721220 is an abundant number, since it is smaller than the sum of its proper divisors (6216894780).

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

3436721220 is a wasteful number, since it uses less digits than its factorization.

3436721220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183324 (or 183322 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 30.

The square root of 3436721220 is about 58623.5551634324. Note that the first 3 decimals coincide. The cubic root of 3436721220 is about 1509.0887035316.

Adding to 3436721220 its reverse (221276343), we get a palindrome (3657997563).

The spelling of 3436721220 in words is "three billion, four hundred thirty-six million, seven hundred twenty-one thousand, two hundred twenty".