405660480 has 56 divisors (see below), whose sum is σ = 1287975072. Its totient is φ = 108175872.

The previous prime is 405660457. The next prime is 405660491. The reversal of 405660480 is 84066504.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 210322 + ... + 212241.

Almost surely, 2^405660480 is an apocalyptic number.

405660480 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

405660480 is an abundant number, since it is smaller than the sum of its proper divisors (882314592).

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

405660480 is a wasteful number, since it uses less digits than its factorization.

405660480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 422583 (or 422573 counting only the distinct ones).

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

The square root of 405660480 is about 20141.0148701598. The cubic root of 405660480 is about 740.2655973814.

The spelling of 405660480 in words is "four hundred five million, six hundred sixty thousand, four hundred eighty".