12603920 has 80 divisors (see below), whose sum is σ = 34069248. Its totient is φ = 4247040.

The previous prime is 12603917. The next prime is 12603923. The reversal of 12603920 is 2930621.

12603920 = T₅₆₀ + T₅₆₁ + ... + T₆₃₀.

It is an interprime number because it is at equal distance from previous prime (12603917) and next prime (12603923).

It is a tau number, because it is divible by the number of its divisors (80).

It is not an unprimeable number, because it can be changed into a prime (12603923) 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, 39602 + ... + 39918.

Almost surely, 2^12603920 is an apocalyptic number.

12603920 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 12603920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17034624).

12603920 is an abundant number, since it is smaller than the sum of its proper divisors (21465328).

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

12603920 is a wasteful number, since it uses less digits than its factorization.

12603920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 408 (or 402 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 12603920 is about 3550.1999943665. The cubic root of 12603920 is about 232.7208061502.

The spelling of 12603920 in words is "twelve million, six hundred three thousand, nine hundred twenty".