28651396 has 6 divisors (see below), whose sum is σ = 50139950. Its totient is φ = 14325696.

The previous prime is 28651393. The next prime is 28651421. The reversal of 28651396 is 69315682.

It can be written as a sum of positive squares in only one way, i.e., 23425600 + 5225796 = 4840^2 + 2286^2 .

It is not an unprimeable number, because it can be changed into a prime (28651393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3581421 + ... + 3581428.

Almost surely, 2^28651396 is an apocalyptic number.

It is an amenable number.

28651396 is a deficient number, since it is larger than the sum of its proper divisors (21488554).

28651396 is a wasteful number, since it uses less digits than its factorization.

28651396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7162853 (or 7162851 counting only the distinct ones).

The product of its digits is 77760, while the sum is 40.

The square root of 28651396 is about 5352.6998795001. The cubic root of 28651396 is about 305.9956568794.

The spelling of 28651396 in words is "twenty-eight million, six hundred fifty-one thousand, three hundred ninety-six".