12690740 has 24 divisors (see below), whose sum is σ = 26794152. Its totient is φ = 5048960.

The previous prime is 12690739. The next prime is 12690757. The reversal of 12690740 is 4709621.

12690740 is nontrivially palindromic in base 11.

It can be written as a sum of positive squares in 4 ways, for example, as 6360484 + 6330256 = 2522^2 + 2516^2 .

It is a super-2 number, since 2×12690740² = 322109763495200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2330 + ... + 5550.

It is an arithmetic number, because the mean of its divisors is an integer number (1116423).

Almost surely, 2^12690740 is an apocalyptic number.

12690740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12690740 is an abundant number, since it is smaller than the sum of its proper divisors (14103412).

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

12690740 is a wasteful number, since it uses less digits than its factorization.

12690740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3427 (or 3425 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 12690740 is about 3562.4064900008. The cubic root of 12690740 is about 233.2539367055.

The spelling of 12690740 in words is "twelve million, six hundred ninety thousand, seven hundred forty".