3721336220 has 48 divisors (see below), whose sum is σ = 9001574400. Its totient is φ = 1265834304.

The previous prime is 3721336211. The next prime is 3721336253. The reversal of 3721336220 is 226331273.

It is a super-4 number, since 4×3721336220⁴ (a number of 39 digits) contains 4444 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 86870 + ... + 122429.

It is an arithmetic number, because the mean of its divisors is an integer number (187532800).

Almost surely, 2^3721336220 is an apocalyptic number.

It is an amenable number.

3721336220 is an abundant number, since it is smaller than the sum of its proper divisors (5280238180).

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

3721336220 is a wasteful number, since it uses less digits than its factorization.

3721336220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209442 (or 209440 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 29.

The square root of 3721336220 is about 61002.7558393881. The cubic root of 3721336220 is about 1549.6476785067.

Adding to 3721336220 its reverse (226331273), we get a palindrome (3947667493).

The spelling of 3721336220 in words is "three billion, seven hundred twenty-one million, three hundred thirty-six thousand, two hundred twenty".