12628940 has 24 divisors (see below), whose sum is σ = 26859840. Its totient is φ = 4987008.

The previous prime is 12628937. The next prime is 12628961. The reversal of 12628940 is 4982621.

It is a junction number, because it is equal to n+sod(n) for n = 12628897 and 12628906.

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 7 ways as a sum of consecutive naturals, for example, 2417 + ... + 5576.

It is an arithmetic number, because the mean of its divisors is an integer number (1119160).

Almost surely, 2^12628940 is an apocalyptic number.

12628940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12628940 is an abundant number, since it is smaller than the sum of its proper divisors (14230900).

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

12628940 is a wasteful number, since it uses less digits than its factorization.

12628940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8081 (or 8079 counting only the distinct ones).

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

The square root of 12628940 is about 3553.7219925031. The cubic root of 12628940 is about 232.8746954681.

The spelling of 12628940 in words is "twelve million, six hundred twenty-eight thousand, nine hundred forty".