405930852 has 30 divisors (see below), whose sum is σ = 1061184278. Its totient is φ = 135310176.

The previous prime is 405930829. The next prime is 405930857. The reversal of 405930852 is 258039504.

It can be written as a sum of positive squares in only one way, i.e., 404251236 + 1679616 = 20106^2 + 1296^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (405930857) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 626113 + ... + 626760.

Almost surely, 2^405930852 is an apocalyptic number.

It is an amenable number.

405930852 is an abundant number, since it is smaller than the sum of its proper divisors (655253426).

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

405930852 is a wasteful number, since it uses less digits than its factorization.

405930852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1252889 (or 1252878 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

The square root of 405930852 is about 20147.7257277341. The cubic root of 405930852 is about 740.4300227654.

The spelling of 405930852 in words is "four hundred five million, nine hundred thirty thousand, eight hundred fifty-two".