28646012 has 6 divisors (see below), whose sum is σ = 50130528. Its totient is φ = 14323004.

The previous prime is 28645979. The next prime is 28646021. The reversal of 28646012 is 21064682.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3580748 + ... + 3580755.

It is an arithmetic number, because the mean of its divisors is an integer number (8355088).

Almost surely, 2^28646012 is an apocalyptic number.

It is an amenable number.

28646012 is a deficient number, since it is larger than the sum of its proper divisors (21484516).

28646012 is a wasteful number, since it uses less digits than its factorization.

28646012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7161507 (or 7161505 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 28646012 is about 5352.1969321018. The cubic root of 28646012 is about 305.9764887172.

The spelling of 28646012 in words is "twenty-eight million, six hundred forty-six thousand, twelve".