12028649 has 8 divisors (see below), whose sum is σ = 12567360. Its totient is φ = 11498256.

The previous prime is 12028637. The next prime is 12028657. The reversal of 12028649 is 94682021.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12028649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12028669) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 974 + ... + 5000.

It is an arithmetic number, because the mean of its divisors is an integer number (1570920).

Almost surely, 2^12028649 is an apocalyptic number.

It is an amenable number.

12028649 is a deficient number, since it is larger than the sum of its proper divisors (538711).

12028649 is a wasteful number, since it uses less digits than its factorization.

12028649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4159.

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 12028649 is about 3468.2342769773. The cubic root of 12028649 is about 229.1248977024.

The spelling of 12028649 in words is "twelve million, twenty-eight thousand, six hundred forty-nine".