405013040 has 20 divisors (see below), whose sum is σ = 941655504. Its totient is φ = 162005184.

The previous prime is 405013031. The next prime is 405013061. The reversal of 405013040 is 40310504.

It is a tau number, because it is divible by the number of its divisors (20).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2531252 + ... + 2531411.

Almost surely, 2^405013040 is an apocalyptic number.

405013040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

405013040 is an abundant number, since it is smaller than the sum of its proper divisors (536642464).

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

405013040 is a wasteful number, since it uses less digits than its factorization.

405013040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5062676 (or 5062670 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 405013040 is about 20124.9357762950. The cubic root of 405013040 is about 739.8715628079.

Adding to 405013040 its reverse (40310504), we get a palindrome (445323544).

The spelling of 405013040 in words is "four hundred five million, thirteen thousand, forty".