7780084280 has 96 divisors (see below), whose sum is σ = 18648273600. Its totient is φ = 2920603392.

The previous prime is 7780084217. The next prime is 7780084303. The reversal of 7780084280 is 824800877.

It is a happy number.

It is a super-2 number, since 2×7780084280² (a number of 21 digits) 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 23 ways as a sum of consecutive naturals, for example, 1571489 + ... + 1576431.

It is an arithmetic number, because the mean of its divisors is an integer number (194252850).

Almost surely, 2^7780084280 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 7780084280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9324136800).

7780084280 is an abundant number, since it is smaller than the sum of its proper divisors (10868189320).

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

7780084280 is a wasteful number, since it uses less digits than its factorization.

7780084280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5101 (or 5078 counting only the distinct ones).

The product of its (nonzero) digits is 200704, while the sum is 44.

The square root of 7780084280 is about 88204.7860379469. The cubic root of 7780084280 is about 1981.5031506479.

The spelling of 7780084280 in words is "seven billion, seven hundred eighty million, eighty-four thousand, two hundred eighty".