12620784 has 120 divisors (see below), whose sum is σ = 37403856. Its totient is φ = 3660800.

The previous prime is 12620711. The next prime is 12620789. The reversal of 12620784 is 48702621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12620789) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 238102 + ... + 238154.

Almost surely, 2^12620784 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12620784, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18701928).

12620784 is an abundant number, since it is smaller than the sum of its proper divisors (24783072).

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

12620784 is a wasteful number, since it uses less digits than its factorization.

12620784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127 (or 110 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 30.

The square root of 12620784 is about 3552.5742779005. The cubic root of 12620784 is about 232.8245530958.

It can be divided in two parts, 126 and 20784, that added together give a triangular number (20910 = T₂₀₄).

The spelling of 12620784 in words is "twelve million, six hundred twenty thousand, seven hundred eighty-four".