28058001212 has 6 divisors (see below), whose sum is σ = 49101502128. Its totient is φ = 14029000604.

The previous prime is 28058001187. The next prime is 28058001227. The reversal of 28058001212 is 21210085082.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3507250148 + ... + 3507250155.

It is an arithmetic number, because the mean of its divisors is an integer number (8183583688).

Almost surely, 2^28058001212 is an apocalyptic number.

It is an amenable number.

28058001212 is a deficient number, since it is larger than the sum of its proper divisors (21043500916).

28058001212 is a wasteful number, since it uses less digits than its factorization.

28058001212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7014500307 (or 7014500305 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 29.

Adding to 28058001212 its reverse (21210085082), we get a palindrome (49268086294).

The spelling of 28058001212 in words is "twenty-eight billion, fifty-eight million, one thousand, two hundred twelve".