405612432 has 60 divisors (see below), whose sum is σ = 1171782144. Its totient is φ = 130841280.

The previous prime is 405612407. The next prime is 405612481. The reversal of 405612432 is 234216504.

405612432 is a `hidden beast` number, since 4 + 0 + 5 + 612 + 43 + 2 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 405612396 and 405612405.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 40968 + ... + 49895.

Almost surely, 2^405612432 is an apocalyptic number.

It is an amenable number.

405612432 is an abundant number, since it is smaller than the sum of its proper divisors (766169712).

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

405612432 is a wasteful number, since it uses less digits than its factorization.

405612432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90908 (or 90899 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 405612432 is about 20139.8220448940. The cubic root of 405612432 is about 740.2363695849.

Adding to 405612432 its reverse (234216504), we get a palindrome (639828936).

The spelling of 405612432 in words is "four hundred five million, six hundred twelve thousand, four hundred thirty-two".