28393235 has 8 divisors (see below), whose sum is σ = 36692880. Its totient is φ = 20967264.

The previous prime is 28393231. The next prime is 28393249. The reversal of 28393235 is 53239382.

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

It is a cyclic number.

It is not a de Polignac number, because 28393235 - 2² = 28393231 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28393195 and 28393204.

It is not an unprimeable number, because it can be changed into a prime (28393231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 218345 + ... + 218474.

It is an arithmetic number, because the mean of its divisors is an integer number (4586610).

Almost surely, 2^28393235 is an apocalyptic number.

28393235 is a deficient number, since it is larger than the sum of its proper divisors (8299645).

28393235 is a wasteful number, since it uses less digits than its factorization.

28393235 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 436837.

The product of its digits is 38880, while the sum is 35.

The square root of 28393235 is about 5328.5302851725. The cubic root of 28393235 is about 305.0738332406.

The spelling of 28393235 in words is "twenty-eight million, three hundred ninety-three thousand, two hundred thirty-five".