405322480 has 40 divisors (see below), whose sum is σ = 945443952. Its totient is φ = 161601024.

The previous prime is 405322469. The next prime is 405322481. The reversal of 405322480 is 84223504.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (405322481) 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, 16947 + ... + 33133.

Almost surely, 2^405322480 is an apocalyptic number.

405322480 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

405322480 is an abundant number, since it is smaller than the sum of its proper divisors (540121472).

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

405322480 is a wasteful number, since it uses less digits than its factorization.

405322480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16513 (or 16507 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 28.

The square root of 405322480 is about 20132.6222832496. The cubic root of 405322480 is about 740.0599415774.

Adding to 405322480 its reverse (84223504), we get a palindrome (489545984).

The spelling of 405322480 in words is "four hundred five million, three hundred twenty-two thousand, four hundred eighty".