8130780 has 144 divisors (see below), whose sum is σ = 29352960. Its totient is φ = 1850688.

The previous prime is 8130779. The next prime is 8130791. The reversal of 8130780 is 870318.

It is a super-2 number, since 2×8130780² = 132219166816800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 33901 + ... + 34139.

It is an arithmetic number, because the mean of its divisors is an integer number (203840).

Almost surely, 2^8130780 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 8130780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14676480).

8130780 is an abundant number, since it is smaller than the sum of its proper divisors (21222180).

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

8130780 is a wasteful number, since it uses less digits than its factorization.

8130780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270 (or 256 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 27.

The square root of 8130780 is about 2851.4522615678. The cubic root of 8130780 is about 201.0839480038.

The spelling of 8130780 in words is "eight million, one hundred thirty thousand, seven hundred eighty".