11945140 has 48 divisors (see below), whose sum is σ = 26127360. Its totient is φ = 4584320.

The previous prime is 11945123. The next prime is 11945161. The reversal of 11945140 is 4154911.

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 15 ways as a sum of consecutive naturals, for example, 62445 + ... + 62635.

It is an arithmetic number, because the mean of its divisors is an integer number (544320).

Almost surely, 2^11945140 is an apocalyptic number.

11945140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11945140 is an abundant number, since it is smaller than the sum of its proper divisors (14182220).

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

11945140 is a wasteful number, since it uses less digits than its factorization.

11945140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 312 (or 310 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 25.

The square root of 11945140 is about 3456.1741854253. The cubic root of 11945140 is about 228.5934320336.

The spelling of 11945140 in words is "eleven million, nine hundred forty-five thousand, one hundred forty".