28625211 has 16 divisors (see below), whose sum is σ = 42549120. Its totient is φ = 19019880.

The previous prime is 28625173. The next prime is 28625231. The reversal of 28625211 is 11252682.

It is a happy number.

28625211 is a `hidden beast` number, since 28 + 625 + 2 + 11 = 666.

It is not a de Polignac number, because 28625211 - 2⁹ = 28624699 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (28625231) 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, 7336 + ... + 10538.

It is an arithmetic number, because the mean of its divisors is an integer number (2659320).

Almost surely, 2^28625211 is an apocalyptic number.

28625211 is a deficient number, since it is larger than the sum of its proper divisors (13923909).

28625211 is a wasteful number, since it uses less digits than its factorization.

28625211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3543 (or 3537 counting only the distinct ones).

The product of its digits is 1920, while the sum is 27.

The square root of 28625211 is about 5350.2533584869. The cubic root of 28625211 is about 305.9024102486.

Adding to 28625211 its reverse (11252682), we get a palindrome (39877893).

The spelling of 28625211 in words is "twenty-eight million, six hundred twenty-five thousand, two hundred eleven".