405330330 has 16 divisors (see below), whose sum is σ = 972792864. Its totient is φ = 108088080.

The previous prime is 405330313. The next prime is 405330349. The reversal of 405330330 is 33033504.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 405330297 and 405330306.

It is an unprimeable number.

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, 6755476 + ... + 6755535.

It is an arithmetic number, because the mean of its divisors is an integer number (60799554).

Almost surely, 2^405330330 is an apocalyptic number.

405330330 is an abundant number, since it is smaller than the sum of its proper divisors (567462534).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

405330330 is a wasteful number, since it uses less digits than its factorization.

405330330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13511021.

The product of its (nonzero) digits is 1620, while the sum is 21.

The square root of 405330330 is about 20132.8172395221. The cubic root of 405330330 is about 740.0647191996.

Adding to 405330330 its reverse (33033504), we get a palindrome (438363834).

The spelling of 405330330 in words is "four hundred five million, three hundred thirty thousand, three hundred thirty".