405676272 has 20 divisors (see below), whose sum is σ = 1047997160. Its totient is φ = 135225408.

The previous prime is 405676259. The next prime is 405676279. The reversal of 405676272 is 272676504.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 405676272.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (405676279) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4225747 + ... + 4225842.

It is an arithmetic number, because the mean of its divisors is an integer number (52399858).

Almost surely, 2^405676272 is an apocalyptic number.

It is an amenable number.

405676272 is an abundant number, since it is smaller than the sum of its proper divisors (642320888).

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

405676272 is a wasteful number, since it uses less digits than its factorization.

405676272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8451600 (or 8451594 counting only the distinct ones).

The product of its (nonzero) digits is 141120, while the sum is 39.

The square root of 405676272 is about 20141.4069022003. The cubic root of 405676272 is about 740.2752032161.

The spelling of 405676272 in words is "four hundred five million, six hundred seventy-six thousand, two hundred seventy-two".