12550720 has 112 divisors (see below), whose sum is σ = 36868608. Its totient is φ = 3962880.

The previous prime is 12550687. The next prime is 12550723. The reversal of 12550720 is 2705521.

It is a tau number, because it is divible by the number of its divisors (112).

It is a junction number, because it is equal to n+sod(n) for n = 12550691 and 12550700.

It is not an unprimeable number, because it can be changed into a prime (12550723) 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, 28905 + ... + 29335.

It is an arithmetic number, because the mean of its divisors is an integer number (329184).

Almost surely, 2^12550720 is an apocalyptic number.

12550720 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 12550720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18434304).

12550720 is an abundant number, since it is smaller than the sum of its proper divisors (24317888).

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

12550720 is a wasteful number, since it uses less digits than its factorization.

12550720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 468 (or 458 counting only the distinct ones).

The product of its (nonzero) digits is 700, while the sum is 22.

The square root of 12550720 is about 3542.6995356649. The cubic root of 12550720 is about 232.3929132623.

The spelling of 12550720 in words is "twelve million, five hundred fifty thousand, seven hundred twenty".