11920290 has 32 divisors (see below), whose sum is σ = 29384640. Its totient is φ = 3092544.

The previous prime is 11920289. The next prime is 11920291. The reversal of 11920290 is 9202911.

It is an interprime number because it is at equal distance from previous prime (11920289) and next prime (11920291).

It is a self number, because there is not a number n which added to its sum of digits gives 11920290.

It is not an unprimeable number, because it can be changed into a prime (11920291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4260 + ... + 6479.

It is an arithmetic number, because the mean of its divisors is an integer number (918270).

Almost surely, 2^11920290 is an apocalyptic number.

11920290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11920290 is an abundant number, since it is smaller than the sum of its proper divisors (17464350).

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

11920290 is a wasteful number, since it uses less digits than its factorization.

11920290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10786.

The product of its (nonzero) digits is 324, while the sum is 24.

The square root of 11920290 is about 3452.5772981933. The cubic root of 11920290 is about 228.4348043264.

It can be divided in two parts, 1 and 1920290, that added together give a palindrome (1920291).

The spelling of 11920290 in words is "eleven million, nine hundred twenty thousand, two hundred ninety".