28551235 has 16 divisors (see below), whose sum is σ = 35447616. Its totient is φ = 22059648.

The previous prime is 28551227. The next prime is 28551241. The reversal of 28551235 is 53215582.

It is a cyclic number.

It is not a de Polignac number, because 28551235 - 2³ = 28551227 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28551197 and 28551206.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28554 + ... + 29536.

It is an arithmetic number, because the mean of its divisors is an integer number (2215476).

Almost surely, 2^28551235 is an apocalyptic number.

28551235 is a deficient number, since it is larger than the sum of its proper divisors (6896381).

28551235 is a wasteful number, since it uses less digits than its factorization.

28551235 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1182.

The product of its digits is 12000, while the sum is 31.

The square root of 28551235 is about 5343.3355687248. The cubic root of 28551235 is about 305.6386688628.

The spelling of 28551235 in words is "twenty-eight million, five hundred fifty-one thousand, two hundred thirty-five".