3385281840 has 80 divisors (see below), whose sum is σ = 10832925696. Its totient is φ = 873619200.

The previous prime is 3385281839. The next prime is 3385281857. The reversal of 3385281840 is 481825833.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×3385281840² = 22920266272467571200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 3385281792 and 3385281801.

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, 220066 + ... + 234945.

Almost surely, 2^3385281840 is an apocalyptic number.

3385281840 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3385281840 is an abundant number, since it is smaller than the sum of its proper divisors (7447643856).

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

3385281840 is a wasteful number, since it uses less digits than its factorization.

3385281840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 455058 (or 455052 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 42.

The square root of 3385281840 is about 58183.1748875910. The cubic root of 3385281840 is about 1501.5216913372.

The spelling of 3385281840 in words is "three billion, three hundred eighty-five million, two hundred eighty-one thousand, eight hundred forty".