11980040 has 16 divisors (see below), whose sum is σ = 26955180. Its totient is φ = 4792000.

The previous prime is 11980039. The next prime is 11980057. The reversal of 11980040 is 4008911.

It can be written as a sum of positive squares in 2 ways, for example, as 11062276 + 917764 = 3326^2 + 958^2 .

It is a junction number, because it is equal to n+sod(n) for n = 11979988 and 11980015.

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 3 ways as a sum of consecutive naturals, for example, 149711 + ... + 149790.

Almost surely, 2^11980040 is an apocalyptic number.

11980040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11980040 is an abundant number, since it is smaller than the sum of its proper divisors (14975140).

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

11980040 is a wasteful number, since it uses less digits than its factorization.

11980040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 299512 (or 299508 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 23.

The square root of 11980040 is about 3461.2194382905. The cubic root of 11980040 is about 228.8158419761.

Adding to 11980040 its reverse (4008911), we get a palindrome (15988951).

The spelling of 11980040 in words is "eleven million, nine hundred eighty thousand, forty".