12444780 has 48 divisors (see below), whose sum is σ = 35046144. Its totient is φ = 3299520.

The previous prime is 12444767. The next prime is 12444787. The reversal of 12444780 is 8744421.

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 (12444787) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12169 + ... + 13151.

It is an arithmetic number, because the mean of its divisors is an integer number (730128).

Almost surely, 2^12444780 is an apocalyptic number.

12444780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12444780 is an abundant number, since it is smaller than the sum of its proper divisors (22601364).

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

12444780 is a wasteful number, since it uses less digits than its factorization.

12444780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1206 (or 1204 counting only the distinct ones).

The product of its (nonzero) digits is 7168, while the sum is 30.

The square root of 12444780 is about 3527.7159749617. The cubic root of 12444780 is about 231.7371924976.

The spelling of 12444780 in words is "twelve million, four hundred forty-four thousand, seven hundred eighty".