12601540 has 24 divisors (see below), whose sum is σ = 30244032. Its totient is φ = 4320480.

The previous prime is 12601489. The next prime is 12601543. The reversal of 12601540 is 4510621.

12601540 is a modest number, since divided by 1540 gives 1260 as remainder.

It is not an unprimeable number, because it can be changed into a prime (12601543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44866 + ... + 45145.

It is an arithmetic number, because the mean of its divisors is an integer number (1260168).

Almost surely, 2^12601540 is an apocalyptic number.

12601540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12601540 is an abundant number, since it is smaller than the sum of its proper divisors (17642492).

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

12601540 is a wasteful number, since it uses less digits than its factorization.

12601540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90027 (or 90025 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 12601540 is about 3549.8647861574. The cubic root of 12601540 is about 232.7061569938.

The spelling of 12601540 in words is "twelve million, six hundred one thousand, five hundred forty".