405600012 has 18 divisors (see below), whose sum is σ = 1025266788. Its totient is φ = 135199992.

The previous prime is 405600007. The next prime is 405600017. The reversal of 405600012 is 210006504.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (405600007) and next prime (405600017).

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×405600012² = 329022739468800288, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (405600017) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5633298 + ... + 5633369.

It is an arithmetic number, because the mean of its divisors is an integer number (56959266).

Almost surely, 2^405600012 is an apocalyptic number.

It is an amenable number.

405600012 is an abundant number, since it is smaller than the sum of its proper divisors (619666776).

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

405600012 is a wasteful number, since it uses less digits than its factorization.

405600012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11266677 (or 11266672 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 405600012 is about 20139.5136982004. The cubic root of 405600012 is about 740.2288140723.

Adding to 405600012 its reverse (210006504), we get a palindrome (615606516).

The spelling of 405600012 in words is "four hundred five million, six hundred thousand, twelve".