405085620 has 48 divisors (see below), whose sum is σ = 1164901248. Its totient is φ = 105102720.

The previous prime is 405085613. The next prime is 405085633. The reversal of 405085620 is 26580504.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 89016 + ... + 93455.

It is an arithmetic number, because the mean of its divisors is an integer number (24268776).

Almost surely, 2^405085620 is an apocalyptic number.

It is an amenable number.

405085620 is an abundant number, since it is smaller than the sum of its proper divisors (759815628).

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

405085620 is a wasteful number, since it uses less digits than its factorization.

405085620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182520 (or 182518 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 30.

The square root of 405085620 is about 20126.7389310837. The cubic root of 405085620 is about 739.9157561756.

The spelling of 405085620 in words is "four hundred five million, eighty-five thousand, six hundred twenty".