11961090 has 48 divisors (see below), whose sum is σ = 31269888. Its totient is φ = 3172128.

The previous prime is 11961083. The next prime is 11961091. The reversal of 11961090 is 9016911.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11961091) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 31039 + ... + 31421.

It is an arithmetic number, because the mean of its divisors is an integer number (651456).

Almost surely, 2^11961090 is an apocalyptic number.

11961090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11961090 is an abundant number, since it is smaller than the sum of its proper divisors (19308798).

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

11961090 is a wasteful number, since it uses less digits than its factorization.

11961090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 743 (or 740 counting only the distinct ones).

The product of its (nonzero) digits is 486, while the sum is 27.

The square root of 11961090 is about 3458.4808803866. The cubic root of 11961090 is about 228.6951315145.

The spelling of 11961090 in words is "eleven million, nine hundred sixty-one thousand, ninety".