28012245 has 16 divisors (see below), whose sum is σ = 44936640. Its totient is φ = 14900864.

The previous prime is 28012241. The next prime is 28012267. The reversal of 28012245 is 54221082.

It is a cyclic number.

It is not a de Polignac number, because 28012245 - 2² = 28012241 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28012241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4057 + ... + 8513.

It is an arithmetic number, because the mean of its divisors is an integer number (2808540).

Almost surely, 2^28012245 is an apocalyptic number.

It is an amenable number.

28012245 is a deficient number, since it is larger than the sum of its proper divisors (16924395).

28012245 is a wasteful number, since it uses less digits than its factorization.

28012245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4884.

The product of its (nonzero) digits is 1280, while the sum is 24.

The square root of 28012245 is about 5292.6595393998. The cubic root of 28012245 is about 303.7031562506.

The spelling of 28012245 in words is "twenty-eight million, twelve thousand, two hundred forty-five".