405800235 has 24 divisors (see below), whose sum is σ = 705500640. Its totient is φ = 215776512.

The previous prime is 405800231. The next prime is 405800237. The reversal of 405800235 is 532008504.

It is not a de Polignac number, because 405800235 - 2² = 405800231 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 405800199 and 405800208.

It is not an unprimeable number, because it can be changed into a prime (405800231) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1786 + ... + 28544.

It is an arithmetic number, because the mean of its divisors is an integer number (29395860).

Almost surely, 2^405800235 is an apocalyptic number.

405800235 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

405800235 is a deficient number, since it is larger than the sum of its proper divisors (299700405).

405800235 is a wasteful number, since it uses less digits than its factorization.

405800235 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27107 (or 27104 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 405800235 is about 20144.4839844559. The cubic root of 405800235 is about 740.3505978069.

Adding to 405800235 its reverse (532008504), we get a palindrome (937808739).

The spelling of 405800235 in words is "four hundred five million, eight hundred thousand, two hundred thirty-five".