3278771520 has 112 divisors (see below), whose sum is σ = 10427866368. Its totient is φ = 872847360.

The previous prime is 3278771479. The next prime is 3278771549. The reversal of 3278771520 is 251778723.

It is a super-2 number, since 2×3278771520² = 21500685360726220800, which contains 22 as substring.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

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, 631977 + ... + 637143.

Almost surely, 2^3278771520 is an apocalyptic number.

3278771520 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 3278771520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5213933184).

3278771520 is an abundant number, since it is smaller than the sum of its proper divisors (7149094848).

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

3278771520 is a wasteful number, since it uses less digits than its factorization.

3278771520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5848 (or 5838 counting only the distinct ones).

The product of its (nonzero) digits is 164640, while the sum is 42.

The square root of 3278771520 is about 57260.5581530603. The cubic root of 3278771520 is about 1485.6062506679.

The spelling of 3278771520 in words is "three billion, two hundred seventy-eight million, seven hundred seventy-one thousand, five hundred twenty".