28025207 has 24 divisors (see below), whose sum is σ = 34189056. Its totient is φ = 22882608.

The previous prime is 28025203. The next prime is 28025213. The reversal of 28025207 is 70252082.

It is not a de Polignac number, because 28025207 - 2² = 28025203 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28025203) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 98888 + ... + 99170.

It is an arithmetic number, because the mean of its divisors is an integer number (1424544).

Almost surely, 2^28025207 is an apocalyptic number.

28025207 is a deficient number, since it is larger than the sum of its proper divisors (6163849).

28025207 is a wasteful number, since it uses less digits than its factorization.

28025207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 387 (or 380 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 26.

The square root of 28025207 is about 5293.8839239258. The cubic root of 28025207 is about 303.7499928308.

Adding to 28025207 its reverse (70252082), we get a palindrome (98277289).

The spelling of 28025207 in words is "twenty-eight million, twenty-five thousand, two hundred seven".