12303920 has 80 divisors (see below), whose sum is σ = 30935520. Its totient is φ = 4534272.

The previous prime is 12303911. The next prime is 12303953. The reversal of 12303920 is 2930321.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 12303892 and 12303901.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 112826 + ... + 112934.

It is an arithmetic number, because the mean of its divisors is an integer number (386694).

Almost surely, 2^12303920 is an apocalyptic number.

12303920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12303920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15467760).

12303920 is an abundant number, since it is smaller than the sum of its proper divisors (18631600).

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

12303920 is a wasteful number, since it uses less digits than its factorization.

12303920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222 (or 216 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 20.

The square root of 12303920 is about 3507.6943994596. The cubic root of 12303920 is about 230.8595436822.

The spelling of 12303920 in words is "twelve million, three hundred three thousand, nine hundred twenty".