12078520 has 32 divisors (see below), whose sum is σ = 27565920. Its totient is φ = 4762240.

The previous prime is 12078511. The next prime is 12078523. The reversal of 12078520 is 2587021.

12078520 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12078523) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 714 + ... + 4966.

It is an arithmetic number, because the mean of its divisors is an integer number (861435).

Almost surely, 2^12078520 is an apocalyptic number.

12078520 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 12078520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13782960).

12078520 is an abundant number, since it is smaller than the sum of its proper divisors (15487400).

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

12078520 is a wasteful number, since it uses less digits than its factorization.

12078520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4335 (or 4331 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 25.

The square root of 12078520 is about 3475.4165217999. The cubic root of 12078520 is about 229.4411131060.

The spelling of 12078520 in words is "twelve million, seventy-eight thousand, five hundred twenty".