405232028 has 24 divisors (see below), whose sum is σ = 738379824. Its totient is φ = 194428800.

The previous prime is 405232027. The next prime is 405232039. The reversal of 405232028 is 820232504.

It is a junction number, because it is equal to n+sod(n) for n = 405231988 and 405232006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (405232021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10250 + ... + 30257.

It is an arithmetic number, because the mean of its divisors is an integer number (30765826).

Almost surely, 2^405232028 is an apocalyptic number.

It is an amenable number.

405232028 is a deficient number, since it is larger than the sum of its proper divisors (333147796).

405232028 is a wasteful number, since it uses less digits than its factorization.

405232028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40613 (or 40611 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 26.

The square root of 405232028 is about 20130.3757540688. The cubic root of 405232028 is about 740.0048867464.

The spelling of 405232028 in words is "four hundred five million, two hundred thirty-two thousand, twenty-eight".