408320706280 has 32 divisors (see below), whose sum is σ = 918750704040. Its totient is φ = 163323106560.

The previous prime is 408320706263. The next prime is 408320706289. The reversal of 408320706280 is 82607023804.

It can be written as a sum of positive squares in 4 ways, for example, as 382693178884 + 25627527396 = 618622^2 + 160086^2 .

It is a Harshad number since it is a multiple of its sum of digits (40).

It is not an unprimeable number, because it can be changed into a prime (408320706289) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1273450 + ... + 1561510.

Almost surely, 2^408320706280 is an apocalyptic number.

408320706280 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

408320706280 is an abundant number, since it is smaller than the sum of its proper divisors (510429997760).

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

408320706280 is a wasteful number, since it uses less digits than its factorization.

408320706280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 323509 (or 323505 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 40.

The spelling of 408320706280 in words is "four hundred eight billion, three hundred twenty million, seven hundred six thousand, two hundred eighty".