11261380 has 24 divisors (see below), whose sum is σ = 25468632. Its totient is φ = 4157952.

The previous prime is 11261359. The next prime is 11261407. The reversal of 11261380 is 8316211.

It can be written as a sum of positive squares in 4 ways, for example, as 2452356 + 8809024 = 1566^2 + 2968^2 .

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 7 ways as a sum of consecutive naturals, for example, 21397 + ... + 21916.

It is an arithmetic number, because the mean of its divisors is an integer number (1061193).

Almost surely, 2^11261380 is an apocalyptic number.

11261380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11261380 is an abundant number, since it is smaller than the sum of its proper divisors (14207252).

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

11261380 is a wasteful number, since it uses less digits than its factorization.

11261380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43335 (or 43333 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 11261380 is about 3355.7979676971. The cubic root of 11261380 is about 224.1457650312.

Adding to 11261380 its reverse (8316211), we get a palindrome (19577591).

The spelling of 11261380 in words is "eleven million, two hundred sixty-one thousand, three hundred eighty".