11955390 has 64 divisors (see below), whose sum is σ = 29998080. Its totient is φ = 3047040.

The previous prime is 11955373. The next prime is 11955397. The reversal of 11955390 is 9355911.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11955397) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 85941 + ... + 86079.

It is an arithmetic number, because the mean of its divisors is an integer number (468720).

Almost surely, 2^11955390 is an apocalyptic number.

11955390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 11955390, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14999040).

11955390 is an abundant number, since it is smaller than the sum of its proper divisors (18042690).

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

11955390 is a wasteful number, since it uses less digits than its factorization.

11955390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257.

The product of its (nonzero) digits is 6075, while the sum is 33.

The square root of 11955390 is about 3457.6567209600. The cubic root of 11955390 is about 228.6587978868.

The spelling of 11955390 in words is "eleven million, nine hundred fifty-five thousand, three hundred ninety".