11999240 has 32 divisors (see below), whose sum is σ = 29453760. Its totient is φ = 4363200.

The previous prime is 11999233. The next prime is 11999257. The reversal of 11999240 is 4299911.

It is a self number, because there is not a number n which added to its sum of digits gives 11999240.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13196 + ... + 14075.

It is an arithmetic number, because the mean of its divisors is an integer number (920430).

Almost surely, 2^11999240 is an apocalyptic number.

11999240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11999240 is an abundant number, since it is smaller than the sum of its proper divisors (17454520).

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

11999240 is a wasteful number, since it uses less digits than its factorization.

11999240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27293 (or 27289 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 35.

The square root of 11999240 is about 3463.9919168497. The cubic root of 11999240 is about 228.9380151707.

The spelling of 11999240 in words is "eleven million, nine hundred ninety-nine thousand, two hundred forty".