408243456 has 72 divisors (see below), whose sum is σ = 1207268160. Its totient is φ = 136078848.

The previous prime is 408243403. The next prime is 408243467. The reversal of 408243456 is 654342804.

408243456 is a `hidden beast` number, since 408 + 243 + 4 + 5 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 408243456.

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, 22620 + ... + 36443.

Almost surely, 2^408243456 is an apocalyptic number.

It is an amenable number.

408243456 is an abundant number, since it is smaller than the sum of its proper divisors (799024704).

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

408243456 is an equidigital number, since it uses as much as digits as its factorization.

408243456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59088 (or 59068 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 36.

The square root of 408243456 is about 20205.0354119957. The cubic root of 408243456 is about 741.8334473109.

The spelling of 408243456 in words is "four hundred eight million, two hundred forty-three thousand, four hundred fifty-six".