12648890 has 8 divisors (see below), whose sum is σ = 22768020. Its totient is φ = 5059552.

The previous prime is 12648887. The next prime is 12648893. The reversal of 12648890 is 9884621.

It is an interprime number because it is at equal distance from previous prime (12648887) and next prime (12648893).

It can be written as a sum of positive squares in 2 ways, for example, as 11296321 + 1352569 = 3361^2 + 1163^2 .

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

It is not an unprimeable number, because it can be changed into a prime (12648893) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 632435 + ... + 632454.

Almost surely, 2^12648890 is an apocalyptic number.

12648890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12648890 is a deficient number, since it is larger than the sum of its proper divisors (10119130).

12648890 is a wasteful number, since it uses less digits than its factorization.

12648890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1264896.

The product of its (nonzero) digits is 27648, while the sum is 38.

The square root of 12648890 is about 3556.5278011004. The cubic root of 12648890 is about 232.9972553969.

The spelling of 12648890 in words is "twelve million, six hundred forty-eight thousand, eight hundred ninety".