403828305 has 8 divisors (see below), whose sum is σ = 646125312. Its totient is φ = 215375088.

The previous prime is 403828301. The next prime is 403828307. The reversal of 403828305 is 503828304.

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

It is not a de Polignac number, because 403828305 - 2² = 403828301 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (403828301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13460929 + ... + 13460958.

It is an arithmetic number, because the mean of its divisors is an integer number (80765664).

Almost surely, 2^403828305 is an apocalyptic number.

It is an amenable number.

403828305 is a deficient number, since it is larger than the sum of its proper divisors (242297007).

403828305 is a wasteful number, since it uses less digits than its factorization.

403828305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26921895.

The product of its (nonzero) digits is 23040, while the sum is 33.

The square root of 403828305 is about 20095.4797155977. The cubic root of 403828305 is about 739.1494397067.

Subtracting 403828305 from its reverse (503828304), we obtain a palindrome (99999999).

The spelling of 403828305 in words is "four hundred three million, eight hundred twenty-eight thousand, three hundred five".