3421687320 has 128 divisors (see below), whose sum is σ = 11576102400. Its totient is φ = 898812288.

The previous prime is 3421687303. The next prime is 3421687337. The reversal of 3421687320 is 237861243.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (3421687303) and next prime (3421687337).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 48717 + ... + 96003.

It is an arithmetic number, because the mean of its divisors is an integer number (90438300).

Almost surely, 2^3421687320 is an apocalyptic number.

3421687320 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 3421687320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5788051200).

3421687320 is an abundant number, since it is smaller than the sum of its proper divisors (8154415080).

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

3421687320 is a wasteful number, since it uses less digits than its factorization.

3421687320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47374 (or 47364 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 36.

The square root of 3421687320 is about 58495.1905715333. The cubic root of 3421687320 is about 1506.8849895945.

The spelling of 3421687320 in words is "three billion, four hundred twenty-one million, six hundred eighty-seven thousand, three hundred twenty".