28670235 has 32 divisors (see below), whose sum is σ = 51121152. Its totient is φ = 13601280.

The previous prime is 28670209. The next prime is 28670261. The reversal of 28670235 is 53207682.

It is an interprime number because it is at equal distance from previous prime (28670209) and next prime (28670261).

It is not a de Polignac number, because 28670235 - 2¹⁰ = 28669211 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a junction number, because it is equal to n+sod(n) for n = 28670196 and 28670205.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5907 + ... + 9603.

It is an arithmetic number, because the mean of its divisors is an integer number (1597536).

Almost surely, 2^28670235 is an apocalyptic number.

28670235 is a deficient number, since it is larger than the sum of its proper divisors (22450917).

28670235 is a wasteful number, since it uses less digits than its factorization.

28670235 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3763.

The product of its (nonzero) digits is 20160, while the sum is 33.

The square root of 28670235 is about 5354.4593564617. The cubic root of 28670235 is about 306.0627087510.

The spelling of 28670235 in words is "twenty-eight million, six hundred seventy thousand, two hundred thirty-five".