3420643520 has 112 divisors (see below), whose sum is σ = 9327855360. Its totient is φ = 1170422784.

The previous prime is 3420643481. The next prime is 3420643547. The reversal of 3420643520 is 253460243.

It is a tau number, because it is divible by the number of its divisors (112).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1385327 + ... + 1387793.

Almost surely, 2^3420643520 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3420643520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4663927680).

3420643520 is an abundant number, since it is smaller than the sum of its proper divisors (5907211840).

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

3420643520 is a wasteful number, since it uses less digits than its factorization.

3420643520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3110 (or 3100 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 29.

The square root of 3420643520 is about 58486.2677899693. The cubic root of 3420643520 is about 1506.7317468255.

The spelling of 3420643520 in words is "three billion, four hundred twenty million, six hundred forty-three thousand, five hundred twenty".