11922690 has 64 divisors (see below), whose sum is σ = 32457600. Its totient is φ = 2778624.

The previous prime is 11922679. The next prime is 11922697. The reversal of 11922690 is 9622911.

It is a happy number.

11922690 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×11922690² = 284301073672200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (11922697) 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, 6606 + ... + 8214.

It is an arithmetic number, because the mean of its divisors is an integer number (507150).

Almost surely, 2^11922690 is an apocalyptic number.

11922690 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 11922690, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16228800).

11922690 is an abundant number, since it is smaller than the sum of its proper divisors (20534910).

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

11922690 is a wasteful number, since it uses less digits than its factorization.

11922690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1651.

The product of its (nonzero) digits is 1944, while the sum is 30.

The square root of 11922690 is about 3452.9248471405. The cubic root of 11922690 is about 228.4501341196.

It can be divided in two parts, 119226 and 90, that added together give a triangular number (119316 = T₄₈₈).

The spelling of 11922690 in words is "eleven million, nine hundred twenty-two thousand, six hundred ninety".