12900628 has 12 divisors (see below), whose sum is σ = 24312820. Its totient is φ = 5954112.

The previous prime is 12900623. The next prime is 12900661. The reversal of 12900628 is 82600921.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 5513104 + 7387524 = 2348^2 + 2718^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12900596 and 12900605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12900623) 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, 123993 + ... + 124096.

Almost surely, 2^12900628 is an apocalyptic number.

It is an amenable number.

12900628 is a deficient number, since it is larger than the sum of its proper divisors (11412192).

12900628 is a wasteful number, since it uses less digits than its factorization.

12900628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 248106 (or 248104 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 12900628 is about 3591.7444229789. The cubic root of 12900628 is about 234.5328156197.

The spelling of 12900628 in words is "twelve million, nine hundred thousand, six hundred twenty-eight".