12287690 has 16 divisors (see below), whose sum is σ = 22157928. Its totient is φ = 4906176.

The previous prime is 12287689. The next prime is 12287701. The reversal of 12287690 is 9678221.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 2283121 + 10004569 = 1511^2 + 3163^2 .

It is a super-2 number, since 2×12287690² = 301974651072200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12287690.

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, 9524 + ... + 10736.

Almost surely, 2^12287690 is an apocalyptic number.

12287690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12287690 is a deficient number, since it is larger than the sum of its proper divisors (9870238).

12287690 is a wasteful number, since it uses less digits than its factorization.

12287690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2233.

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 12287690 is about 3505.3801505686. The cubic root of 12287690 is about 230.7579907061.

The spelling of 12287690 in words is "twelve million, two hundred eighty-seven thousand, six hundred ninety".