12923280 has 160 divisors (see below), whose sum is σ = 46187520. Its totient is φ = 3317760.

The previous prime is 12923279. The next prime is 12923293. The reversal of 12923280 is 8232921.

It is a happy number.

It is a super-2 number, since 2×12923280² = 334022331916800, which contains 22 as substring.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 66864 + ... + 67056.

It is an arithmetic number, because the mean of its divisors is an integer number (288672).

Almost surely, 2^12923280 is an apocalyptic number.

12923280 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 12923280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23093760).

12923280 is an abundant number, since it is smaller than the sum of its proper divisors (33264240).

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

12923280 is a wasteful number, since it uses less digits than its factorization.

12923280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246 (or 234 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 12923280 is about 3594.8963823732. The cubic root of 12923280 is about 234.6700061221.

It can be divided in two parts, 12923 and 280, that added together give a triangular number (13203 = T₁₆₂).

The spelling of 12923280 in words is "twelve million, nine hundred twenty-three thousand, two hundred eighty".