12540650 has 12 divisors (see below), whose sum is σ = 23325702. Its totient is φ = 5016240.

The previous prime is 12540641. The next prime is 12540653. The reversal of 12540650 is 5604521.

It can be written as a sum of positive squares in 3 ways, for example, as 11785489 + 755161 = 3433^2 + 869^2 .

It is not an unprimeable number, because it can be changed into a prime (12540653) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 125357 + ... + 125456.

Almost surely, 2^12540650 is an apocalyptic number.

12540650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12540650 is a deficient number, since it is larger than the sum of its proper divisors (10785052).

12540650 is a wasteful number, since it uses less digits than its factorization.

12540650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250825 (or 250820 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 12540650 is about 3541.2780178913. The cubic root of 12540650 is about 232.3307435807.

The spelling of 12540650 in words is "twelve million, five hundred forty thousand, six hundred fifty".