12817740 has 48 divisors (see below), whose sum is σ = 38652768. Its totient is φ = 3154944.

The previous prime is 12817733. The next prime is 12817757. The reversal of 12817740 is 4771821.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 12817698 and 12817707.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7437 + ... + 8996.

It is an arithmetic number, because the mean of its divisors is an integer number (805266).

Almost surely, 2^12817740 is an apocalyptic number.

12817740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12817740 is an abundant number, since it is smaller than the sum of its proper divisors (25835028).

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

12817740 is a wasteful number, since it uses less digits than its factorization.

12817740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16458 (or 16456 counting only the distinct ones).

The product of its (nonzero) digits is 3136, while the sum is 30.

The square root of 12817740 is about 3580.1871459464. The cubic root of 12817740 is about 234.0294359931.

The spelling of 12817740 in words is "twelve million, eight hundred seventeen thousand, seven hundred forty".