405128034 has 32 divisors (see below), whose sum is σ = 901031040. Its totient is φ = 134930736.

The previous prime is 405127991. The next prime is 405128041. The reversal of 405128034 is 430821504.

405128034 is a `hidden beast` number, since 40 + 512 + 80 + 34 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 405127989 and 405128007.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 86107 + ... + 90689.

It is an arithmetic number, because the mean of its divisors is an integer number (28157220).

Almost surely, 2^405128034 is an apocalyptic number.

405128034 is an abundant number, since it is smaller than the sum of its proper divisors (495903006).

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

405128034 is a wasteful number, since it uses less digits than its factorization.

405128034 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6231 (or 6225 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 405128034 is about 20127.7925764352. The cubic root of 405128034 is about 739.9415792692.

Adding to 405128034 its reverse (430821504), we get a palindrome (835949538).

The spelling of 405128034 in words is "four hundred five million, one hundred twenty-eight thousand, thirty-four".