28620235 has 8 divisors (see below), whose sum is σ = 39250656. Its totient is φ = 19625280.

The previous prime is 28620217. The next prime is 28620247. The reversal of 28620235 is 53202682.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 28620235 - 2⁷ = 28620107 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 408826 + ... + 408895.

It is an arithmetic number, because the mean of its divisors is an integer number (4906332).

Almost surely, 2^28620235 is an apocalyptic number.

28620235 is a deficient number, since it is larger than the sum of its proper divisors (10630421).

28620235 is an equidigital number, since it uses as much as digits as its factorization.

28620235 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 817733.

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 28620235 is about 5349.7883135691. The cubic root of 28620235 is about 305.8846839327.

It can be divided in two parts, 2862023 and 5, that added together give a triangular number (2862028 = T₂₃₉₂).

The spelling of 28620235 in words is "twenty-eight million, six hundred twenty thousand, two hundred thirty-five".