12455740 has 36 divisors (see below), whose sum is σ = 28756728. Its totient is φ = 4528480.

The previous prime is 12455731. The next prime is 12455741. The reversal of 12455740 is 4755421.

It is a junction number, because it is equal to n+sod(n) for n = 12455699 and 12455708.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12455741) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 154 + ... + 4993.

It is an arithmetic number, because the mean of its divisors is an integer number (798798).

Almost surely, 2^12455740 is an apocalyptic number.

12455740 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 12455740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14378364).

12455740 is an abundant number, since it is smaller than the sum of its proper divisors (16300988).

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

12455740 is a wasteful number, since it uses less digits than its factorization.

12455740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5178 (or 5165 counting only the distinct ones).

The product of its (nonzero) digits is 5600, while the sum is 28.

The square root of 12455740 is about 3529.2690461341. The cubic root of 12455740 is about 231.8052021207.

The spelling of 12455740 in words is "twelve million, four hundred fifty-five thousand, seven hundred forty".