11945890 has 32 divisors (see below), whose sum is σ = 23664960. Its totient is φ = 4305600.

The previous prime is 11945867. The next prime is 11945897. The reversal of 11945890 is 9854911.

11945890 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (11945897) 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, 13996 + ... + 14824.

It is an arithmetic number, because the mean of its divisors is an integer number (739530).

Almost surely, 2^11945890 is an apocalyptic number.

11945890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11945890 is a deficient number, since it is larger than the sum of its proper divisors (11719070).

11945890 is a wasteful number, since it uses less digits than its factorization.

11945890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 978.

The product of its (nonzero) digits is 12960, while the sum is 37.

The square root of 11945890 is about 3456.2826851981. The cubic root of 11945890 is about 228.5982161685.

The spelling of 11945890 in words is "eleven million, nine hundred forty-five thousand, eight hundred ninety".