3487780280 has 64 divisors (see below), whose sum is σ = 8005392000. Its totient is φ = 1367192704.

The previous prime is 3487780279. The next prime is 3487780301. The reversal of 3487780280 is 820877843.

It is a happy number.

It is a super-2 number, since 2×3487780280² = 24329222563113756800, which contains 22 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, 816791 + ... + 821049.

It is an arithmetic number, because the mean of its divisors is an integer number (125084250).

Almost surely, 2^3487780280 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 3487780280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4002696000).

3487780280 is an abundant number, since it is smaller than the sum of its proper divisors (4517611720).

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

3487780280 is a wasteful number, since it uses less digits than its factorization.

3487780280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4676 (or 4672 counting only the distinct ones).

The product of its (nonzero) digits is 602112, while the sum is 47.

The square root of 3487780280 is about 59057.4320471183. The cubic root of 3487780280 is about 1516.5254604814.

The spelling of 3487780280 in words is "three billion, four hundred eighty-seven million, seven hundred eighty thousand, two hundred eighty".