12747998 has 8 divisors (see below), whose sum is σ = 19528992. Its totient is φ = 6238336.

The previous prime is 12747983. The next prime is 12748013. The reversal of 12747998 is 89974721.

It is an interprime number because it is at equal distance from previous prime (12747983) and next prime (12748013).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×12747998² = 325022906016008, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 67715 + ... + 67902.

It is an arithmetic number, because the mean of its divisors is an integer number (2441124).

Almost surely, 2^12747998 is an apocalyptic number.

12747998 is a deficient number, since it is larger than the sum of its proper divisors (6780994).

12747998 is a wasteful number, since it uses less digits than its factorization.

12747998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135666.

The product of its digits is 254016, while the sum is 47.

The square root of 12747998 is about 3570.4338671932. The cubic root of 12747998 is about 233.6042083240.

The spelling of 12747998 in words is "twelve million, seven hundred forty-seven thousand, nine hundred ninety-eight".