11130780 has 48 divisors (see below), whose sum is σ = 32245920. Its totient is φ = 2865408.

The previous prime is 11130761. The next prime is 11130787. The reversal of 11130780 is 8703111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11130787) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1459 + ... + 4938.

It is an arithmetic number, because the mean of its divisors is an integer number (671790).

Almost surely, 2^11130780 is an apocalyptic number.

11130780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11130780 is an abundant number, since it is smaller than the sum of its proper divisors (21115140).

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

11130780 is a wasteful number, since it uses less digits than its factorization.

11130780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6438 (or 6436 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 21.

The square root of 11130780 is about 3336.2823621510. The cubic root of 11130780 is about 223.2759090994.

Adding to 11130780 its reverse (8703111), we get a palindrome (19833891).

The spelling of 11130780 in words is "eleven million, one hundred thirty thousand, seven hundred eighty".