11923020 has 36 divisors (see below), whose sum is σ = 36167040. Its totient is φ = 3179424.

The previous prime is 11923019. The next prime is 11923057. The reversal of 11923020 is 2032911.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 11922984 and 11923002.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 32940 + ... + 33299.

It is an arithmetic number, because the mean of its divisors is an integer number (1004640).

Almost surely, 2^11923020 is an apocalyptic number.

11923020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11923020 is an abundant number, since it is smaller than the sum of its proper divisors (24244020).

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

11923020 is a wasteful number, since it uses less digits than its factorization.

11923020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66254 (or 66249 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

The square root of 11923020 is about 3452.9726323850. The cubic root of 11923020 is about 228.4522418053.

Adding to 11923020 its reverse (2032911), we get a palindrome (13955931).

The spelling of 11923020 in words is "eleven million, nine hundred twenty-three thousand, twenty".